Price : Rs.10,000/- (Rupees Ten Thousand only) (Non refundable)...

CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12

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CITY & INDUSTRIAL DEVELOPMENT CORPORATION OF

MAHARASHTRA LIMITED

Name of Work : Realignment of 36.0 M wide road in Sector-5, near existing ROB

at Dronagiri.

C.A. No. : 06/CIDCO/EE(DRON-I)/2011-12

Due On : 29/05/2012 to 30/05/2012 on website

cidco.maharashtra.etenders.in

Price : Rs.10,000/- (Rupees Ten Thousand only)

(Non refundable)

OFFICE

THE CHIEF ENGINEER & GENERAL MANAGER (TECH)

CIDCO OF MAHARASHTRA LIMITED,

3RD FLOOR, CIDCO BHAVAN,

CBD-BELAPUR, NAVI MUMBAI.


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Name of Work : Construction / Upgradation of 36 M. wide road (one carriageway) leading to coastal road Dronagiri, Navi Mumbai. (upto 1st stage)

INDEX Sr. No.

Description Sl. Pg. No.

1. Index 1 2

2. Tender Notice 3 7

3. Tendering Programme 8 8

4. Notice of Tender & Instructions to the Tenderers 9 18

5. Undertaking for Submission of Tender 19 22

6. Special Conditions of Contract 23 31

7. Proforma of :

a) Contract Agreement 32 35

b) Bank Guarantee in Lieu of Contract Deposit 36 39

c) Indenture Bond 40 44

d) Promissory Note 45 45

e) Indemnity Bond 46 47

f) Bank Guarantee in Lieu of E.M.D. 48 51

g) Affidavit for Preservation of Mangroves 52 53

h) Agreeing to General Conditions of Contract 54 54

8. General Conditions of Contract 55 170

9. Notes & Preambles to Schedule of Rates & Quantities (Schedule “A”)

171 176

10. Schedule “A” (Bill of Quantities) 177 201

11. Annexure “A” 202 203

12. Schedule “B” 204 204

13. General Specifications 205 205


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Sr. No.

Description Sl. Pg. No.

14. Particular Specifications 206 328

15. Checklist for Ready Mix Concrete 329 335

16. Annexure-I 336 337

17. List of Approved Makes / Brands of Materials 338 338

18. List of Drawings 339 339

19. Drawings 340 345

20. Corrigendum if any --

Signature of Tenderer Chief Engineer & General Manager (Tech.)

Date : Date :


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TENDER NOTICE TENDER NOTICE PUBLISHED IN DAILY MARATHI NEWSPAPER

“Vartahar, Pudhari & Punya Nagari ” DATED : 28 March, 2012.


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TTEENNDDEERR NNOOTTIICCEE (WORKS WITH ESTIMATED COST FROM `.1.50 Crs. UPTO `s.15 Crs.)

CIDCO of Maharashtra Limited through the process of e-tendering invites “ON

LINE” item rate percentage tenders from the reputed experienced prospective

bidders, registered with CIDCO Ltd., Maharashtra State PWD, CPWD, MJP, MIDC,

MCGM in appropriate class, who have completed work of similar nature for the

work mentioned below:

Sr. No.

Description Details

1. Name of Work Realignment of 36.0 M wide road in Sector-5,

near existing ROB at Dronagiri.

2. C.A.No. 06/CIDCO/EE(DRON-I)/2011-12

3. Estimated Cost

(` in Lacs) `. 4,93,83,674.90

4. EMD `. 4,94,000.00

5. Registration Class Class II & above

6. Completion Period 12 Months (including monsoon)

7. Cost of Blank Tender

document `. 10,000.00 (Non-Refundable)

ELIGIBILITY CRITERIA:

1) Pre-qualification “On-Line” submission shall be accompanied by attested copies of

a) Valid Registration Certificate

b) Sales Tax Certificate (MVAT)

c) Income Tax Permanent Account Number

2) Experience of having successfully completed works during the last 5(Five)

years ending last day of the month previous to the one in which applications are invited:


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(a) One similar completed work of costing not less than the amount equal

to 50% of the estimated cost;

OR

(b) Two best similar completed works adding to a total cost of minimum

80% of the estimated cost of proposed work;

OR

(c) Three best similar completed works adding to a total cost of minimum

90% of the estimated cost of proposed work.

3) Joint Venture/Consortium are not permitted.

4) FINANCIAL CRITERIA: The Prospective Bidders will be qualified only if they have minimum financial capabilities as below:-

i) Working Capital (Current Assets – Current Liabilities): Working

Capital (Net Cash Flow) of the Prospective Bidders during last audited financial years should be greater than `. 1.25 Crore

ii) Profitability: Profit after Tax should be Positive FOR “Two Years ”out of

last three consecutive financial years: such that it should be positive for immediate last financial year and one year out of two previous years.

iii) Net Worth: Net worth of Prospective Bidder during last audited

financial year should be greater than `. 0.50 Crores or 10% of cost of work.

5) Average Annual Turnover: The average annual turnover of last three

financial years should be equal to or greater than `. 3.71 Crores or 75% of annualized cost of the work.

Note:

I) Turn over will be considered for main bidder and not for the Group

Company or Subsidiary Company for all members of consortium put together.

ii) The value of works shall be brought to current costing level by

enhancing the executed value of work at simple rate of 7% per annum


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6) BID CAPACITY CRITERIA:

The Prospective Bidder will be qualified only if their available bid capacity is

more than the Estimated Cost of the work as per notice inviting Tender. The available bid capacity will be calculated base on the following formula:

Available Bid capacity= 2 x A x N - B

where,

A= Average Annual Turn Over for last Three financial years.

N= No. of years prescribed for Completion of the work.

B= Value of existing commitments and on going works to be completed

during the period of Completion of work

NOTES :

1) For Pre-qualification on-line submission shall be accompanied by attested

copies of Registration, valid Bank solvency certificate, sales tax certificate

(MVAT), Income Tax Permanent Account No., list of technical staff, list of

works & it’s magnitude, executed in last Five years along with work completion certificates, list of works in hand.

The applicant should also produce original documents for verification if

called for. Failure to attach necessary documents with application will render

applicant ineligible for purchase / downloading of blank tender without any intimation.

2) Tender documents shall neither be sent nor received by post/courier.

3) Right to issue tender documents is reserved with CIDCO. CIDCO reserves

right to reject any or all tenders without assigning any reason and the same

shall be at the entire discretion of CIDCO. CIDCO’s decision in this respect shall be final and binding.

4) Conditional tenders shall be summarily rejected.

5) The offer shall remain valid for a period of one hundred twenty (120) days from the date of submission of tender.

6) The agencies eligible on the basis of CIDCO’s registration & having fixed

EMD with CIDCO will have to enclose the valid EMD exemption certificate in

appropriate amount issued by CIDCO. In case the agency who have fixed


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EMD for an amount less than required EMD, will have to pay the balance

amount of EMD. In remaining cases the eligible contractor has to pay full EMD, as prescribed in the Tender Document.

7) Tender price money of Rs. 10,000/- (non-refundable) will be accepted by

Demand Draft only, drawn in favour of “CIDCO LTD”, payable at Navi

Mumbai and copy of the receipt shall be uploaded before purchase of tender.

8) For further details regarding the above, contact Executive Engineer (DRON-I), CIDCO Ltd., CIDCO Nodal Office, Sector –14, Bokadvira, Navi Mumbai-400702, Tel. No. : 022-2722 0282.

The queries from the perspective bidders should be submitted on this e-mail [email protected].

9) For any details regarding e-Tendering system in CIDCO, please contact

service provider M/s. Sify NexTenders (India) Pvt. Ltd., Yuchit, Juhu Tara

Road, Mumbai- 400 049, Tele. No.: 022-2661 1117 or Mob. No.: 9819139090,987020952, 9867804847, website – www.nextenders.com.

10) Tenderers are required to pay charges to the service provider M/s. Sify Nex

Tenders (India) Pvt. Ltd., for uploading the prequalification documents and also for uploading the main tender documents if prequalified, etc.

Chief Engineer & General Manager(Tech.)

CIDCO Ltd.


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TENDERING PROGRAMME Name of Work : Realignment of 36.0 M wide road in Sector-5, near existing ROB at

Dronagiri.

Seq No

CIDCO Stage Vendor Stage Start Date & Time Expiry Date & Time

1 Release Document 28/03/2012 10:00 28/03/2012 17:00 2 Purchase Document 28/03/2012 17:01 16/04/2012 17:00 3 Download, & Prepare

complete Document for Handover

28/03/2012 17:01 16/04/2012 17:00

4 Close New Entries 16/04/2012 17:01 20/04/2012 13:00 5 Handover online the

Prepared Documents 20/04/2012 13:01 27/04/2012 15:00

6 Pre qual Opening & Short listing of Tenders

27/04/2012 15:01 04/05/2012 18:00

7 Main Tender Preparation

04/05/2012 18:01 10/05/2012 17:00

8 Main Tender Document Purchase

10/05/2012 17:01 15/05/2012 17:00

Last date of receipt of Queries from agency

18/05/2012 17:00

Closing of Reply to Queries

23/05/2012 17:00

9 Complete Bid Preparation for Handover

23/05/2012 17:01 29/05/2012 17:00

10 Main Tender Schedule A Document & Online Bid

23/05/2012 17:01 29/05/2012 17:00

11 Close New Entries 29/05/2012 17:01 30/05/2012 13:00 12 Handover the Prepared

Documents 30/05/2012 13:01 05/06/2012 15:00

13 Opening & scrutiny Original Documents

05/06/2012 15:01 07/06/2012 17:00

14 Financial Bid Opening 07/06/2012 17:01 08/06/2012 15:00

NOTE : 1) Submission of original Demand Draft towards cost of tender document, original EMD

documents (Demand Draft / Bank Guarantee) and undertaking for submission of tender on 04.06.2012 during office hours in the office of Executive Engineer (DRON-I), CIDCO Ltd., CIDCO Nodal Office, Sector –14, Bokadvira, Navi Mumbai-400 702.

2) Tenderer may attend financial bid opening as mentioned above. No separate intimation will be given regarding tender opening.

Chief Engineer & General Manager(Tech.) CIDCO LTD.


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NOTICE OF TENDER AND INSTRUCTIONS TO TENDERERS

Name of Work : Realignment of 36.0 M wide road in Sector-5, near existing ROB at Dronagiri.

1.0 TENDER DOCUMENTS

The tender should attach scanned copies of attested documents in PDF

format for “ON-LINE” submission.

2.0 DOWNLOAD OF BLANK TENDER FORM

Contractors intending to download tender for the work shall first get

pre-qualified for the work by applying ON-LINE for prequalification

and attached all relevant documents required by the Employer. Only

those contractors short listed / pre-qualified shall be able to download

the tender document. The right to decide whether a contractor/firm

fulfils the requirements for download tender forms, rests entirely with

the Tender issuing authority of the Employer.

3.0 EARNEST MONEY

The tenderer shall deposit and keep deposited (for the period specified

hereafter) with CIDCO a sum as shown in this tender notice as the

Earnest money. The Earnest Money shall be deposited in one of the

following forms.

(i) By Demand Draft in favour of CIDCO Limited payable at Mumbai.

(ii) By an irrevocable and unconditional Bank Guarantee executed by a

Nationalised/Scheduled Bank approved by CIDCO located either in

Mumbai or in Navi Mumbai in the form prescribed and valid for 180

days from the last date prescribed for submission of tender.


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E.M.D. in form of irrevocable, unconditional Bank Guarantee will be

accepted only if, E.M.D. amount payable is equal or more than

Rs. 1.00 Lac in the cases where Estimated Cost put to Tender is equal or

more than Rs. 100.00 Lacs.

FIXED EMD : The agencies who are eligible to quote the tenders based

on CIDCO Registration and availing the facility of EMD Exemption by

depositing requisite amount with CIDCO Ltd., are required to pay the

difference in amount of EMD fixed for the present tender and amount

already deposited with CIDCO Ltd., for availing the facility of EMD

exemption. The tenderer shall upload the same and also submit attested

copy of valid EMD exemption certificate issued by Executive Engineer(NM),

CIDCO Ltd. to the tender issuing authority prior to opening of financial

bids.

The tenderers who are eligible for issue of tender document on the basis

of registration other than CIDCO registration, shall not be eligible for

availing the facility of EMD Exemption and shall pay full EMD amount.

Tenderers are required to submit the Tender Fee of Rs.10,000/- (Rupees

Ten Thousand Only) (Non-refundable) by way of separate demand draft

drawn in favour of “CIDCO Ltd.” payable at Mumbai / Navi Mumbai and

the same should necessarily be scanned and uploaded in PDF format for

downloading the on-line Tender Document.

The scanned copy of the valid E.M.D. documents of appropriate amount

in PDF format shall be uploaded along with submission of on-line tender.

Original Demand Draft towards cost of tender document, original EMD

documents (Demand draft/Bank Guarantee) and undertaking for

submission of tender shall be submitted in sealed envelope as prescribed

in tendering programme. Financial bid will not be opened till the above


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documents are submitted. in no case the cost of tender document should

be clubbed with E.M.D. amount.

3.1 The failure or omission to deposit or keep deposited the Earnest Money

shall disqualify the tenderer for that tender.

3.2 No interest shall be payable by CIDCO in respect of such deposited

Earnest Money.

3.3 The Earnest Money of an unsuccessful tenderer shall be refunded after the

final decision on the tenders or on expiry of the validity period whichever

is earlier on presenting receipt thereof.

3.4 a) Invitation by CIDCO to submit the tender shall be a proposal and the

submission of a tender by the tenderer shall be an acceptance of such

proposal to win the contract. The tenderer shall not revoke his tender

or vary its terms and conditions without the consent of CIDCO during

the period of 120 days counted from the last day appointed by

CIDCO for submission of tenders. If the tenderer shall revoke the

tender or vary its terms or condition contrary to his promise to abide

by this condition, the Earnest Money Deposited by him shall stand

forfeited to CIDCO without prejudice to its other rights and remedies.

Without prejudice to the foregoing clause, the tenderer shall be

disentitled to submit a tender to CIDCO for execution of any civil work

during the next 24 months effective from the date of such revocation

or variations of the terms and conditions of the tender.

b) The authorized signatory of the lowest tenderer shall duly sign with

their company seal on each page of the hard copy of the tender

documents prepared, within 7 (Seven) working days after issue of

Letter of Acceptance (LOA).


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3.5 If CIDCO shall accept the tender and signify such acceptance to the

tenderer, the Earnest Money so deposited with CIDCO by Demand Draft

shall be appropriated towards Performance Security payable by the

contractor in accordance with Condition No. 10.1 of the General

Conditions of contract.

3.6 If the tenderer has deposited the Earnest Money by a Bank Guarantee

and he has been communicated the acceptance of his tender by CIDCO

and if he fails or omits to furnish the Contract Deposit within 15 days in

accordance with condition No.10.1.1 of the General Conditions of

contract, CIDCO shall be entitled to encash the Bank Guarantee.

3.7 In case of the successful tenderer, on payment of the required amount

of the Contract Deposit, the Earnest Money Deposited in the form of

Bank Guarantee/Demand Draft/pay order shall be refundable to the

tenderer in the event of CIDCO deciding the award of the contract.

3.8.1 The E.M.D. of the successful tenderers shall be forfeited if he

withdraws/revokes his offer or modifies/changes the same during the

validity of the tender, or if after the acceptance of his tender, the

contractor fails or neglects to furnish the balance Contract Deposit

within 15 days.

3.8.2 The E.M.D. of the successful tenderer shall be entitled for forfeiture if

he fails to execute contract agreement within 15 days from the date of

issue of Work Order.

3.8.3 The E.M.D. of the successful tenderer shall be entitled for forfeiture if

he fails to commence; the work within 30 days from the date of issue

of Letter of Acceptance.

3.8.4 The tenderers may also be dis-qualified for tendering for further works

in CIDCO as provided in foregoing Clause No. 3.4 on Sl. Pg No. 11.


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4.0 INTERPRETATION OF CONDITIONS OF CONTRACT

The tenderer shall be deemed to have studied all plans, specifications,

terms & conditions of tender and visited the site of work and made

himself acquainted with the site conditions, availability of labour, basic

materials, water, electricity, approach road to site etc., before on-line

submission of tender, whether the tenderer inspect them or not.

The tenderer shall be deemed to have made independent enquiries

about probable taxes leviable by the local civic authority or the

Government. The ignorance about probable taxes to be paid either to

the local civic authority or to the government shall not be considered as

an excuse. The percentage quoted by tenderer shall be deemed to

include all the taxes, octroi, duties, royalties, etc. payable under the

rules to local civic authority, and / or Government / Statutory body.

On-line submission of Tender implies that tenderer has read these

conditions and other contract documents of the tender as well as the

conditions of the tender and as made himself aware of the same as

also about the condition and other factors having bearing on the

execution of the order.

In case of difference of opinion or dispute regarding the interpretation

of tender conditions, the interpretation of any of the conditions by

Chief Engineer & General Manager (Tech.) of CIDCO Limited shall be

final and binding on the tenderer.

5.0 BLANK TENDER FORM :

Blank tender form will be downloaded from the website. Any other

additional information and/or clarification can be had from the

office of Superintending Engineer (DRON), 5th Floor, Raigad Bhavan,

CBD-Belapur, Navi Mumbai on all working days during the office

hours.


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6.0 METHOD OF SUBMISSION OF TENDER :

The complete tenders submission, “ON-LINE” on the website

cidco.maharashtra.etenders.in can be made only after payment of

requisite fee through payment gateway of the service provider by

prequalified tenderers.

6.1 Tender should be submitted through website

http://cidco.maharashtra.etenders.in and ON-LINE only.

6.2 Late tender offers : Tender’s grievance/ complaint on account of non

submission of tender due to problem in internet, electricity or any other

reason will not be considered.

7.0 METHOD OF OPENING OF TENDER

On the time specified in the tender programme, the tender will be

opened in the presence of tenderers / their representative through

e-tendering procedure at Training Centre, 3rd Floor, CIDCO Bhavan,

CBD Belapur, Navi Mumbai.

CIDCO reserves the right to reject any or all offers. CIDCO is not

bound to give any reason for not considering such offers.

8.0 VALIDITY OF TENDER

Validity of tender shall be 120 days from the specified date of receipt

of tender by CIDCO & there after until it is withdrawn by notice in

writing duly addressed to the authority opening the tender. Such

withdrawal by CIDCO will be effective from the date of receipt of

notice by the tender opening authority.


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9.0 IMPORTANT POINTS TO BE NOTED BY THE TENDERER

a) The ON-LINE submission of tender document should be done on

website by the eligible contractors as per tender programme. The

tenderer has to quote only the percentage in figures. The

percentage in words as also the total quoted amount in figures is

worked out automatically on the web page.

b) The price-bid (percentage) shall be inclusive of all taxes, octroi,

levies duties etc. to be paid by the tenderer for the work and claim

for extra payment on any such account shall not be entertained.

c) Tenderer shall deemed to have studied all plans, specifications,

terms and made himself/themselves acquainted with the site and

availability etc. before submitting the tender.

d) At any time prior to the deadline for sale of tender, the Employer

may amend the tender documents by issuing Corrigendum.

e) Any corrigendum as well as clarification thus issued shall be a part

of the tender documents and it will be assumed that the information

contained in the amendment have been taken into account by the

tenderer while submitting the tender.

f) To give prospective tenderers reasonable time in which to take the

amendment into account in preparing their tenders, the Employer

shall extend, at its discretion, the deadline for submission of

tenders, in which case, the Employers will notify all tenderers by

placing it on website of the extended deadline and the same will be

binding on them.

g) The Employer is not bound to accept the lowest or any tender. The

Employer reserves the right to reject any or all tenders received

without assigning any reasons whatsoever.


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h) This detailed tender notice shall form part of tender documents.

i) Income Tax as applicable on gross bill at percentage that will be in

force form time to time will be recovered from the contractor’s bills,

for all payment including advances.

j) The successful tenderer is required to execute an agreement on

stamp paper of appropriate value in duplicate in the proforma

attached with the tender documents. The agreement shall be signed

within a period of 30 days from date of acceptance of the tender.

10.0 ACCEPTANCE OF TENDER

Acceptance of tender on behalf of the Employer shall be done by an

officer to whom the powers are delegated by the Management.

11.0 EXECUTION OF CONTRACT AGREEMENT :

The successful tenderer is required to execute a contract agreement in

duplicate in the form attached with the tender documents on stamp

paper of proper value. The proper value at present is Rs. 100/-.

The contract agreement should be signed within 30 days from the date

of acceptance of the tender.

12.0 The successful tenderer will be required to produce to the satisfaction of

the Chief Engineer & General Manager (Tech), a valid contract labour

license issued in his favour under the provision of the contract labour

(Regulation and Abolition) Act, 1970, before starting the work. On

failure to do so, the acceptance of the tender is liable to be withdrawn

and also the earnest money is liable to be forfeited.

13.0 The Contractor shall pay the Contract Sales Tax and turnover tax etc.

directly to the Government. CIDCO shall not take any responsibility for

any kind of tax payment to the Government at any point of time.


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13.1 Under Inter-state Migrant Workmen Act and/or Contract Labour Act,

the Contractor should obtain requisite license / registration Certificate

under the Act while engaging the migrant labour from other State.

14.0 Wherever the tender is silent about the specifications, the work shall be

executed as per the Standard Specifications from PWD, Indian

Standard Specifications (Latest Version) for relevant items and

specifications of the Ministry of Road Transport & Highways and all

specifications of materials and workmanship.

15.0 SPLITTING OF WORK

CIDCO reserves the right to suitably increase/reduce the scope of work

put to this tender. The right to split up the work in two or more parts is

reserved by the Employer and also the right to award the work to more

than one agency is reserved. The contractor shall have no claims

whatsoever on this account.

16.0 SPARE CAPACITY OF WORK FOR TENDERING:

The tenderer shall be eligible to submit the tender to CIDCO subject to

the essential condition that the price tendered by him together with the

value of the outstanding works under execution by him for CIDCO or

any other employer shall not be more than four times the value of the

average annual turnover of works executed during the preceding three

financial years.

16.1 The tenderer shall furnish truly & faithfully the foregoing information by

an Affidavit on a Non-Judicial stamp paper of Rs.100/-. If any

information so furnished shall be found to be untrue or false, the

tender shall be liable to be dis-qualified and the Earnest

Money/Performance Security as the case may be accompanying such


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tender shall stand forfeited to CIDCO. If the information so furnished

shall be found to untrue or false during the currency of the contract, the

tenderer shall be held to be in default and the contract if any awarded

to him shall be liable to be terminated with its consequences.

17.0 Notice of tender and these instructions shall form part of the contract.


Date : Date :


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UNDERTAKING FOR SUBMISSION OF TENDER

From : ____________________________

____________________________

To,

The Additional Chief Engineer (I&NT)

CIDCO of Maharashtra Limited,

3rd Floor, CIDCO Bhavan,

CBD-Belapur, Navi Mumbai.


at Dronagiri.


Sir,

1) I/We M/s. __________________________________________ hereby tender for

___________________________________________________________________

___________________________________________________________________

_____________________________________________________ at a total cost

which is quoted in the financial bid ON-LINE at the rate contained in the

aforesaid Schedule of rates and quantities (Schedule - A) including adding to

percentage the rate or deducting the percentage therefrom in case of

percentage tender.

2) I/We agree to execute this work at the above stated offer in accordance with

Design, Drawings, Specifications, Instructions/Directions, Special Conditions

of contract & general conditions of contract supplied by CIDCO which I/We

have read carefully.


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3) I/We have read the General Conditions of Contract & tender documents

attached hereto and agree to abide by such conditions.

4) I/We agree to keep this tender offer open and available to you for

acceptance for a period of 120 (One Hundred Twenty) days from the last

date appointed by CIDCO for submission of tender and further agree not to

revoke the tender or vary its terms and conditions. I/We agree to the

Employer that if I/we revoke the tender or vary its conditions at any time

during such period, the earnest money deposited by us in cash or by way of

bank guarantee shall stand forfeited to you without prejudice to Employers

other rights and remedies.

5) I/We further agree to sign an agreement bond to abide by the General

Condition of Contract and to carry out works according to the specifications

laid down in the tender document.

6) I/We have satisfied myself/ourselves as to the location of the site and working

conditions, examined the requirements of CIDCO, and have obtained all the

information necessary for the successful timely completion of the work.

7) I/We hereby declare that I/We have myself/ourselves thoroughly conversant

with the local conditions regarding availability of all materials such as

cement, steel, sand, stones, murum, pipes, water and power etc. and labour

on which I/We have based my/our rates of this contract. The specifications

and leads of materials to be used in this work have been carefully studied

and understood by me/us before submitting/accepting the contract. I/We

undertake to procure only the best materials approved by the Engineer,

before using the same in the work and to abide by the decision. I/We also

undertake that I/We shall complete the work, if awarded to us, in all respects

on or before the stipulated date of completion.


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8) I/We bind myself/ourselves to deposit the Contract Deposit by way of cash or

as per CIDCO rules, as prescribed in Clause 10.1.1 of General Conditions of

Contract and/or Special Conditions of Contract within 15 days after receiving

your notice that the contract has been awarded to me/us, failing which I/We

shall have no objection to the forfeiture of the earnest money in full, or also

the said earnest money shall be retained by the Employer towards the

Performance Security as specified in the conditions. I/We further bind

myself/ourselves to execute the contract document and to commence work

within stipulated period as mentioned in General Conditions of Contract,

failing which I/We agree to the Employer forfeiting the earnest money and

Performance Security. The said Employer shall also be at liberty to cancel the

notice of acceptance of tender if I/We fail to deposit the Performance Security

as specified or to execute an agreement or to start work as stipulated in the

tender documents.

9) I/We hereby pay the Earnest Money of Rs.__________________________ in

the form of Demand Draft/Bank Guarantee No. ______________________

issued by ______________________________ for the said amount is attached.

10) I/We hereby enclose declaration of my/our experience of execution or works

of similar nature and magnitude carried out by me/us in the prescribed form.

11) I/we understand that you are not bound to accept the lowest tender or bound

to assign any reason for rejecting our tender.

12) I/We agree that the CIDCO shall without prejudice to any other right or

remedy, be at liberty to forfeit the said earnest money absolutely, if -

a) I/We revoke my/our tender or vary any of terms and conditions at any

time during the period of 120 days as stated in Clause No.3.4 of Notice

of Tender & Instructions to the Tenderers.


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b) I/We do not execute the formal contract or make the contract deposit

when called upon to do so.

c) I/We do not commence the work on or before the date specified by

Engineer in the work order.

Yours faithfully, (Signature of Tenderer with seal of the firm)*

Signature of Witness

Date :

Name : ______________________

Address :_____________________

Occupation: _________________

* Power of attorney must be enclosed in case the tender is signed by the

authorized nominees.


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SPECIAL CONDITIONS OF CONTRACT

1.0 GENERAL

The special conditions of contract are to be read in conjunction

with General conditions of contract. If there are any variations or

discrepancies on conflicting provision, the provisions in Special

Conditions shall take precedence over the provisions in the

General Conditions of Contract.

2.0 SCOPE OF WORK

The tender is for the work of “Realignment of 36.0 M wide road in

Sector-5, near existing ROB at Dronagiri.” The work to be carried out

under the contract shall except as otherwise provided in this conditions

include all labour, material, tools, plants, equipment & transport which

may be required in preparation and completion of the works.

The description given in the schedule of works/items/quantities, and

the Bills of Quantities shall, unless otherwise stated, be held to include

waste on materials, carriage & cartage carrying in, return of empties,

hoisting, setting, fitting & fixing in position and all other labour

necessary in & for the full and entire execution & completion as

aforesaid in accordance with good practice & recognized principles.

2.1 The scope of work is as described in detail in schedule “A”. Items of

work to be executed are described in detail to enable the tenderer to

work out rate of each element.

2.2 The exact methodology and quality/quantity audit of carrying out

various items under Schedule “A” and parts shall be incorporated in

the Q.A.M. and such shall be based on/referred as per the approved

Q.A.M. of CIDCO Limited Engineering Department (2009) and further

approved by Engineer.


24

2.3 The various items under Schedule “A” will be comprehensively

undertaken as directed by Engineer and laid out programme in the

Quality Assurance Manual (QAM).

3.0 FIELD LABORATORY

The contractor shall establish a Field Laboratory for the various field

tests for items like concrete cubes, cement aggregates, sand,

bitumen & bitumen products, soil, field density and for similar items

as directed by the Engineer. A site laboratory of approx. 3.0 m. x

4.0 m. area with platform etc. shall be constructed as directed by

the Engineer. A contractor shall appoint experienced Laboratory

Technician to carryout various tests at site.

The laboratory must have the following equipments.

A Slump Cone 1 No.

B Cube Moulds for concrete 18 Nos.

C Cube Testing Machine (150 Tonnes capacity) – electrically operated

1 No.

D Weigh Balance

(2 kg., 5 kg., 20 kg. capacity)

2 Nos.

E IS Sieves (for Course & Fine Aggregates) 1 Set (Each)

F Glass measuring cylinders 3 Nos.

G Moisture Meter 1 No.

H. Field density test equipment with sand pouring cylinder, 3 litres & 15 litres capacity, cutter etc.

1 No.

I MPD apparatus with required IS Sieves & Oven

1 Set

J Bitumen Extraction Apparatus (Manual) 1 No.

K Thermometer (Digital) 1 No.


25

Construction of field Laboratory well equipped with equipment as

listed above is incidental to the work and no separate payment will

be made for this. He should be obtain all relevant I.S. Codes,

Specification books and be kept at site office.

The contractor shall carry out other various tests for various items

and materials at IIT or VJTI laboratories or any other approved

laboratory as directed by the Engineer at contractor’s own cost. At

the end of each month for each category of the work, i.e. PCC/RCC

work, masonry work etc. the contractor shall give statistical analysis

of all the test results in the format prescribed by the Engineer and

take corrective action in the work in accordance with these results.

All pressure gauges, machines, equipments & other measuring &

testing equipments of the laboratory shall be got checked / calibrated

regularly as directed by the Engineer & the necessary certificates

furnished to the Engineer by the Contractor.

4.0 TESTING OF MATERIALS IN CIDCO LABORATORY:

CIDCO has a well equipped testing laboratory for carrying out tests on

soil, cement, sand, aggregate, brick and concrete etc. as prescribed in

I.S. The Engineer may direct the Contractors to get the samples of

materials tested etc. in CIDCO laboratory. The results of the tests are

normally binding on the Contractor and CIDCO. The Engineer is also

empowered to take action to reject or approve materials based on the

test results.

The Contractor shall pay the stipulated charges for carrying out the tests

as per CIDCO rules. In case the Contractor disputes the results of tests, it

is open for him to ask for re-testing in which case the cost shall be borne

by the Contractor. The decision of the Chief Engineer on acceptability or

otherwise of CIDCO test results, re-testing by CIDCO or testing again

independently in V.J.T.I. or I.I.T. will be binding on both the parties to the

contract.


26

5.0 QUARRY

Quarry for extraction of murum shall not be made available by

CIDCO. The Contractor has to make his own arrangement for

quarry at his own cost. Uptill now, the CIDCO was exempted from

paying the Royalty charges for quarries made available in CIDCO

area to the contractors. However, this facility is now cancelled by

Ministry of Revenue and Forest Department of Govt. of Maharashtra

vide their Marathi G.R. No. ieewKeefve/ 1088/433/3592/Ke dated

18.10.2001 and subsequent amendment to this vide Marathi

Circular No. ieewKeefve/10/2001/He.keÀ.308/Ke dated 15.12.2003 and as

amended from time to time. The contractors are requested to obtain

quarry permission from Competent Authority for excavation required

for the work. Therefore, the contractors will have to pay the necessary

Royalty charges for the quarries. Royalty will have to be paid as per

the prevailing rates on the minor minerals available from the

excavation of channels, roads or drains adjoining the roads, bunds,

trenches, reclamation, area leveling, foundation for construction

works etc. use for the works in the same place or at other places.

The Contractor shall have to provide at his cost accesses to the

quarry through private land. All compensation, royalties, fees etc.,

which may be required shall be borne by the Contractor without extra

cost to the Employer.

Contractor will be responsible for payment of royalty for the minor

mineral such as murum etc. available from excavation.

The obstruction and/or impassments caused for access to the quarry

shall be cleared or set right by the Contractor. No claim in this

respect shall be entertained by the Employer.


27

If Contractor desires to seek No Objection Certificate for Quarry

form CIDCO for a private land or CIDCO land or Government land,

Revenue land, Authorised land etc., the Contractor shall have to

apply indicating therein the Survey Nos., from where he wishes to

quarry. The contractor will have to furnish the necessary revenue

maps and ‘Sat-bara’ of private owners and No Objection Certificate

of private Owner/Department for quarrying murum. The necessary

charges of processing the application to the respective Collector of

respective District shall have to be borne by the Contractor. The

contractor will have to pay the necessary ground rent/surface rent of

the area if demanded by the Land Section. The Contractor also will

have to pay the environmental cess, if imposed by the Employer for

issuing No Objection Certificate. After issuing the No Objection

Certificate, the Contractor shall have to execute an agreement with

Land Department, on necessary stamp papers. All the expenditure

for processing the case shall have to be borne by the Contractor and

no claim whatsoever on this account shall be entertained.

The Contractor shall have to submit Quarry Permit for the

murum/earth brought at site of work and the quantity of murum for

payment of bills shall be restricted to that of quarry permits

submitted.

Dewatering if required will not be paid separately. Tenderer should

include cost of this item in his offer.

The work shall be carried out according to the cycles of High Tide

and Low Tide period. The tenderer should note that no extra

payment will be made for idle changes for labour and machinery

due to restricted working hours during period of high tide.


28

5.1 ENVIRONMENTAL CESS

Environmental cess tax @ Rs.1.00/cum. will be deducted from the

contractor’s payments for gross volume of murum computed

without deductions as mentioned for monthly payment and Final

payment.

5.2 QUARRY PERMIT

The successful tenderer shall obtain the quarry permission from the

competent authority and shall submit original permit issued by

competent authority to CIDCO before starting the work and during

subsequent execution of work till its completion. Besides above, the

tenderer shall also submit the original receipt / challan of the

payment made towards quarry charges before each monthly

statement.

On completion of work, the contractor shall obtain the “Royalty

Clearance Certificate” from the office of the Collector and the same

shall be submitted to Engineer before final statement. The final

payment will not paid till above Royalty Clearance Certificate in

original is submitted to Engineer.

6.0 DOCUMENTATION

The contractors are required to submit three copies of

as built drawings in Auto Cad formats with all relevant details on

reproducible tracing (one copy of tracing and three copies of blue

prints and all data on CD) along with the final statement in neat

folders. Photographic evidence of work under execution/completed in

form of CD as well as photographs will also be submitted. The

contractors shall appoint the services of professional surveyors at no

extra cost to CIDCO.


29

Photography & Videography to be done with the help of Digital

camera for documentation of important activities/events. Three copies

& one C.D. of the same should be submitted as directed by Engineer.

This will be at no extra cost to CIDCO.

7.0 QUALITY ASSURANCE SYSTEM :

The contractor will prepare detailed working programme with the help

of professional consultant who should be associated with the work. He

shall also ensure the quality of the work.

7.1 Quality Assurance Manual :- A Quality Assurance manual constituting

a base document outlining policy, procedures, compliance,

acceptance criteria and documentation etc. shall be prepared by the

successful tenderer and should submit for approval within 15 days

from the date of receipt of Work Order. The document shall generally

cover aspects listed below, but is not limited to the same.

i) Identification of all parties involved in Q.A. and their inter-

relationship.

ii) Internal Q.A. system of each party.

iii) Organisation of personnel, responsibilities and lines of

reporting for Q.A. purpose.

iv) Criteria for acceptance / rejection, including identification of

proper authorities for such decisions.

v) Inspection at the end and during defect liability period/

maintenance period.

8.0 SAP

CIDCO Ltd. has implemented Enterprise Resource Planning (ERP)

software SAP in the organization for its various processes. The

contractor will furnish all the project related data, if & when required

by the Engineer, in the manner & format which is compatible to


30

Enterprise Resource Planning software SAP R/3. Apart from the above,

the contractor will make a detailed work program on MS project in soft

& hard copy and submit the same to Engineer for approval before

commencement of work. All monitoring will be done on SAP R/3 as

well as MS project.

9.0 RESTRICTION ON THE DESTRUCTION OR DENUDATION OF

MANGROVES IN NAVI MUMBAI

The contractor shall be aware of the directives given by the Hon’ble

High Court in PIL No.3246 of 2005 for preservation of Mangroves.

He shall submit the affidavit on a Stamp Paper of Rs.100/- in this

respect as per the proforma given on Sl.Pg.No. 52 to 53.

10.0 DEDUCTION OF CESS TOWARDS WELFARE OF BUILDING &

CONSTRUCTION WORKERS

As per the Construction Workers Welfare Cess Act 1996, a cess of 1%

of Contract value towards the welfare of construction workers will be

deducted from the monthly payments.

11.0 TRANSPORTATION : The contractor will provide Air Conditioned Hardtop Vehicle viz.

Xylo/Qualis/Scorpio in good condition along with driver and the

same will be kept at the disposal of Engineer for the use by CIDCO

Staff during the contract period as stipulated in Annexure “A”

including extension granted, if any. This vehicle will be used for

CIDCO works under the directives of the Executive Engineer. The

running of vehicle per month will be 3,000 km. The contractor will

bear all expenses, connected with the operation of the maintenance

of this vehicle, including driver’s wages, overtime and other

benefits, cost of the fuel, lubricant, repairs and maintenance, third


31

party insurance, any other related expenses etc. to the satisfaction of

the Executive Engineer. The vehicle record will be maintained in the

form of log-book at site. The vehicle shall be replaced with a new

vehicle during breakdown time, failing which the Employer will hire

the vehicle at the risk and cost of the contractor.

12.0 REGISTRATION OF CONTRACTOR UNDER CESS WITH NMMC

Contractors/Suppliers quoting for the work in NMMC area must have

valid NMMC Registration Certificate under Cess Act. Incase

registration under Cess Act is not available with Contractor/ Supplier

at the time of tendering, he shall submit an undertaking on Rs.100/-

Stamp Paper of agreeing to submit the same before issue of

Acceptance Letter.

13.0 REGISTRATION WITH E.S.I.C. :

The contractor to get registered with E.S.I.C. under Contract Labour

Act, within 15 days from the date of work order. In absence of getting

registration from E.S.I.C. and not furnishing the license, 1% of contract

sum shall be recovered from Monthly and Final Payments in order to

pay the demand raised by E.S.I.C.


Date : Date :


32

PROFORMA OF CONTRACT AGREEMENT

(On Stamp paper of Rs.100/-)

AGREEMENT FOR THE WORK OF “_____________________________________

______________________________________________________________” (Name of

Work) Article of Agreement made at _________________ (Place)on _____(day)of

_____(Month) of Two Thousand __________ (Year) between City and Industrial

Development Corporation of Maharashtra Limited, a Government of Maharashtra

Undertaking, incorporated under the Companies Act, 1956 and having its

Registered Office at ‘NIRMAL’, 2nd floor, Nariman Point, Mumbai-400 021

(hereinafter called the ‘EMPLOYER’) of the One part and

__________________________________________________(Name of Agency) whose

Registered office is situated at ____________________________________________

(address) (hereinafter called the ‘CONTRACTOR’) of the Other Part.

WHEREAS

The Employer being desirous of providing & executing the work mentioned,

enumerated or referred to in the Tender Notice including Corrigendum to Tender

Notice, Instructions to Tenderer, General Conditions of Contract, Special

Conditions of Contract, Notes & Preambles, Schedule of Rates & Quantities,

Specifications, Drawings and other documents, constituting a Bid and acceptance

thereof, copy hereto annexed all of which are designed to form part of this contract

and are included in the term ‘CONTRACT’ wherever herein used.

AND WHEREAS

The Employer accepted the Bid of the Contractor for the provisions and the

execution of the said work at the rates/percentage stated in the schedule of

quantities of works (hereinafter called the Schedule of Rates upon the terms and

subject to the conditions of contract)


33

AND WHEREAS

The Contractor has deposited with the Employer the sum of Rs._____________

(Rupees______________________________________ only) being the Contract

Deposit payable by him at the rate of 2.50% of the Contract sum and undertake to

pay the balance of the Performance Security payable by him at the rate of 2.50% of

the Contract sum, by allowing the Employer to deduct amount from the bills payable

to him at rate of 5% provided that the total deduction together with contract deposit

shall not exceed in the aggregate 5% of the contract sum.

NOW THIS AGREEMENT WITNESSES AND IT IS HEREBY AGREED BY AND

BETWEEN THE PARTIES AND DECLARED AS FOLLOWS :-

1. The documents which form part of the contract will be the Tender Notice,

including Corrigendum to Tender Notice, Instructions to Tenderers, General

Conditions of Contract, Special Conditions of Contract, Notes & Preambles,

Schedule of Rates & Quantities, Specifications, Drawings and other

documents, constituting a Bid and acceptance thereof. It is further agreed

that the “Acceptance Letter” vide No. ____________________ dated________

& Work Order or Order for Commencement of Work shall constitute part and

parcel of the contract between the parties.

2. In consideration of the payments to be made to the Contractor for the works

to be executed by him, the Contractor shall and will duly provide, execute and

complete the said work on or before the dates mentioned in the time schedule

of completion of work attached to the Bid documents and shall maintain the

same at his own cost for the defects liability period thereafter and perform all

such acts and things in the contract mentioned or described or which are to


34

be implied there from or may be reasonably necessary for the completion of

the said works at the times and the manner and subject to the terms and

conditions or stipulations mentioned in the contract.

3. In consideration of the due provision, execution and completion of the said

works, the Employer does hereby agree with the Contractor that the Employer

will pay to the contractor, the respective amount for the work actually done by

him at the schedule rates quoted and such other sums as may become

payable to the Contractor under the provisions of the contract, such payment

to be made at such time and in such manner as provided for in the

agreement.

4. In consideration of the due provisions, execution and completion of the said

work, the ‘Contractor’ does hereby agree to pay to the Employer the sums as

may be due to the Employer for the services if rendered by the Employer to the

Contractor and such other sum or sums as may become payable to the

Employer towards loss, damage to the Employer’s equipment, materials

construction plant and machinery, including those hired to the contractor, if

any set forth in the said conditions of contract, such payments to be made at

such time and in such manner as provided in the contract.

5. All disputes arising out of or in any way connected with this Contract

Agreement shall be deemed to have arisen in Mumbai and only the courts in

Mumbai shall have jurisdiction to determine the same.

6. The several parts of this contract have been read by me/us and fully

understood by me/us.


35

IN WITNESS WHEREAS THE PARTIES HAVE EXECUTED THESE PRESENTS IN DUPLICATE THE DAY AND YEAR FIRST MENTIONED ABOVE.

SIGNED & DELIVERED FOR AND ON } BEHALF OF CITY AND INDUSTRIAL } DEVELOPMENT CORPORATION OF } MAHARASHTRA LIMITED. } Signature __________________

Designation_________________

In the presence of WITNESS :

1. ____________________ Address _______________

2. ____________________ Address _______________

SIGNED AND DELIVERED FOR }

AND ON BEHALF OF M/s. __________} _________________________________ }

Signature ________________

In the presence of WITNESS :

1._____________________ Address __________________

2._____________________ Address __________________


36

PROFORMA OF BANK GUARANTEE

IN LIEU OF CONTRACT DEPOSIT

(on stamp paper Rs. 100.00 from Nationalised Bank

& operatable in Mumbai or Navi Mumbai only)

(B.G. shall be in case of Contract Amount more than Rs.100 Lacs) To,

City & Industrial Development Corporation of Maharashtra Limited, ‘Nirmal’, 2nd Floor, Nariman Point, Mumbai - 400 021.

1) In consideration of the City and Industrial Development Corporation of

Maharashtra Limited., a Company incorporated under the Companies Act

1956 (1 of 56) and having its registered Office at Nirmal, 2nd Floor, Nariman

Point, Mumbai-400021 (hereinafter called the ‘Employer’ which expression

shall unless repugnant to the subject or context include its successors and

assigns) having agreed under the terms and conditions of Contract

No.________________________ dated________ made between M/s

__________________________ (Name of Agency) (hereinafter called the

‘Contractor’ which expression shall unless repugnant to the subject or

context include his heirs, executors administrators and assigns / (its successors

and assigns) and the Employer in consideration with

____________________________________________________(Name of Work).

(hereinafter called the said “Contract”) to accept a deed of Guarantee as

herein provided for Rs.______________by _____________________ (Name of

the Nationalized / Scheduled Bank, Mumbai / Navi Mumbai Branch) towards

Contract Deposit, for the due fulfillment by the Contractor of the terms and

conditions contained in the said contract, We, _________________________

(Name of Bank and detailed address) the Bank constituted and established under

the Banking Companies (Acquisition and Transfer of Undertaking) Act, 1979


37

(hereinafter referred to as the ‘said Bank’) and having our Head Office at

____________________________________________________(address) at the

request of M/s. _____________________________________ (Name of Agency)

do hereby undertake to pay to the Employer an amount not exceeding

Rs._____________ (Rupees _________________________________________

only) against any loss or damage caused to or suffered or would be caused to

or suffered by the Employer by reasons of any breach or breaches by the said

Contractor(s) of any of the terms or conditions contained in the said Contract

Agreement and to unconditionally pay the amount claimed by the Employer

on demand and without demur to the extent expressed.

2) We, ________________________________________________ (Name of Bank)

do hereby undertake to pay the amounts due and payable under this

guarantee without any demur, merely on a demand from the Employer stating

that the amount claimed is due by way of loss or damage caused to, or would

be caused to or suffered by the Employer by reasons of breach by the said

Contractor(s) of any of the terms or condition contained in the said Contract

Agreement or by reasons of the Contractor(s) failure to perform the said

Contract Agreement. Any such demand made on the Bank shall be

conclusive as regards the amount due and payable by the Bank under this

guarantee. However, our liability under this guarantee shall be restricted

to an amount not exceeding Rs.____________________ (Rupees

____________________________________________________________only).

3) We, _______________________________________________(Name of Bank)

further agree that the Employer shall be the sole judge of and as to whether

the Contractor has committed and breach of any of the terms and conditions

of the said Contract and the extent of loss, damage, costs, charges &

expenses caused to or suffered by or that may be caused to or suffered by the

Employer on account thereof and the decision of the Employer that the


38

Contractor has committed such breach and as to the amount or amounts of

loss, damage, costs, charges & expenses caused to or suffered by or that may

be caused to or suffered by the Employer from time to time shall be final and

binding on us.

4) We undertake to pay to the Employer any money so demanded

notwithstanding any dispute or disputes raised by the Contractor(s) /

Supplier(s) in any suit or proceeding pending before any Court or Tribunal

unequivocal, without demur. The payment so made by us under this bond

shall be a valid discharge of our liability for payment thereunder and the

Contractor(s)/ Supplier(s) shall have no claim against us for making such

payment.

5) We, _______________________________________________ (Name of Bank)

further agree that the guarantee herein contained shall remain in full force

and effect during the Contract Period including extensions in time limit if any

& also till such time the Taking Over Certificate is issued for the whole

completed work including that would be taken from the performance of the

said Agreement and shall continue to be enforceable till all the dues of the

Employer under or by the said Agreement have been fully paid and its claims

satisfied or discharged or till the _________________________________

_____________________(indicate the Authority & Administrative Department)

certified that the terms and conditions of the said Contract Agreement have

been fully and properly carried out by the said Contractor (s) and accordingly

discharges this guarantee. Unless a demand or claim under this guarantee is

made on us in writing on or before _________________ (Contract period +

claim period) we shall be discharged from all liability under this guarantee

thereafter.


39

6) We, _______________________________, further agree with the Employer,

that the Employer shall have the fullest liberty without our consent and without

affecting in any manner our obligations hereunder to vary any of the terms

and conditions of the said Agreement or to extend the time of performance by

the said Contractor(s) from time to time or to postpone for any time any of the

powers exercisable by the Employer against the said Contractor (s) and to

forbear or enforce any of the terms and conditions relating to the said

Agreement and we shall not be relieved from our liability by reasons of any

such variation, or extension being granted the said Contractor(s) or for any

forbearance act or omission on the part of the Employer or any indulgence by

the Employer to the said Contractor(s) or by any such matter or thing

whatsoever which under the law relating to sureties would, but for this

provision have effect of so relieving us.

7) This guarantee will not be discharged due to the change of the constitution of

the Bank or the Contractor(s) /Supplier(s).

8) This guarantee is valid till ___________(completion due) unless a suitable

action to enforce the claim under this guarantee is made within six months

from completion date i.e. up to _____________(date) all yours rights under

this guarantee shall be forfeited and we shall be relieved and discharged

from all liabilities thereunder.

9) We, _____________________________ (Name of Bank) lastly undertake not to

revoke this guarantee during the currency except with the previous consent of

the Employer in writing.

Dated this ______ day of ________ 20__

FOR & ON BEHALF OF BANK

The above guarantee is accepted For and on behalf of the Employer

(Name & Designation)

Date :


40

INDENTURE BOND (On stamp paper of Rs.100)

THIS INDENTURE made on the ______(Day) of __________(Month), 20____ (Year)

M/s. _________________________________________(Name of Agency) (hereinafter

called the ‘Contractor’ which expression shall, where the context so admits or

implies be deemed to include his heirs, executors, administrators, and assigns) of

the ONE PART and City and Industrial Development Corporation of Maharashtra

Limited, a Company incorporated under the Companies Act, 1956 and having its

registered office at ‘Nirmal’, 2nd floor, Nariman Point, Mumbai 400 021

(hereinafter called the ‘EMPLOYER’, which expression shall, where the context so

admits or implies be deemed to include its successor and assigns) of the OTHER

PART.

The contractor has entered into a contract dated _____________ for the work of

“_______________________________________________________________________”

(Name of Work) on the terms and conditions set out their.

The contractor has applied to the Employer that he be allowed advances on the

materials (hereinafter called the ‘said Material’) absolutely belonging to him and

brought by him to the site of the works for use in construction of such of the works

as he had undertaken to execute at stipulated rates, AND of aforesaid nature. The

security of the quantities and other particulars of the materials for which the

advances are being made in the Monthly Payments, will be the sole responsibility of

the Contractor.

NOW THIS INDENTURE WITNESSTH THAT IN PURSUANCE OF THE SAID

CONTRACT and in consideration of the sum of Rs.________________ paid on or

before the execution of these presents to the contractor by the Employer and of the

such further advance (if any) as may be made to him as aforesaid, the Contractor

hereby covenant and agree with the Employer and declares as follows:


41

1. That the said sum so advanced by the Employer to the Contractor as

aforesaid and all or any further sum or sums advanced as aforesaid shall

be used by the contractor in or towards expediting the execution of the

said works and for no other purpose whatsoever.

2. That the said materials which have been offered to and accepted by the

Employer for advances on material, is absolutely the Contractor’s own

property and free from encumbrances of any kind and the contractor shall

not make any application or receive a further advance from the Employer

on the same materials. The contractor indemnifies the Employer against

all claims to any material in respect of which an advance has been made

to him as aforesaid.

3. That the said materials and all other materials on the security of which any

further advances may hereafter be made as aforesaid shall be used by the

Contractor solely in the execution of the said works in accordance with the

direction of the Engineer (hereinafter called ‘the Engineer’) and in terms of

the said contract.

4. That the contractor shall make at his own cost all necessary and adequate

arrangements for the proper watch, safe custody and protection against

all risks of the said materials in the contractor’s custody and on his own

responsibility and shall at times be open to inspection by the Engineer or

any officer authorised by him. In the event of the said materials or any

part thereof being stolen, destroyed, or damaged, the contractor shall

forthwith replace the same with other materials of like quantity or repair

and make good the same as required by the Engineer.


42

5. The above said materials shall not on any account be removed from the

site except with the written permission of the Engineer or any officer

authorised by him on that behalf.

6. That the advance shall be repayable in full when or before the contractor

receives the payment from the Employer on the price payable to him for

the said works under the contract provided that if any intermediate

payment are made to the contractor on account of work done, when on

the occasion of such payment the Employer will be at liberty to make a

recovery from the Contractor’s payment, for such payment by deducting

therefrom the value of the said materials actually used in the construction

and in respect of which recovery has not been made previously. The

value for the purpose of recovery has not been made previously. The

value for the purpose of recovery shall be at the rates at which the

advances were calculated.

7. That if the Contractor shall at any time make any default in the

performance of observance in any respect of any of their terms and

provisions of the said contract or of the said contract or of these presents,

the total amount of the advance or advances that may still be owing to the

Employer shall be immediately on the happening of such default be

repayable by the contractor to the Employer together with interest rate per

annum as prevailing from the date of the respective dates of such advance

or advances, to the date of repayment and with all costs, charges,

damages and expenses incurred by the Employer in or for the recovery

thereof or the enforcement of this security or otherwise be reasons of the

default of the contractor and the contractor hereby covenants and agrees

with the Employer to repay the same respectively to the Employer

accordingly.


43

8. That the contractor hereby hypothecates all the said materials with the

repayment to the Employer of the said sum so advanced and any further

sum or sums, advance as aforesaid all costs, damage and expenses

payable under these presents provided always and it is hereby agreed and

declared that notwithstanding anything in the said agreement and without

prejudice to the powers contained therein shall become enforceable and

the money shall not be paid in accordance with, the Employer may at any

time thereafter adopt all or any of the following courses as he may deem

fit.

(a) Seize and utilise the said materials or any part thereof in the

completion of the said works on behalf of the contractor in

accordance debiting the contractor with the value of the work done

as if he had carried it out in accordance with the said contract and

the rates thereby provided. If the balance is against the contractor,

he is to pay same to the Employer on demand.

(b) Remove and sell by public auction the seized materials or any part

thereof and out of the money arising from the sale retain all the

sum aforesaid repayable or payable to the Employer under these

presents and pay over the surplus (if any) to the Contractor.

(c) Deduct all or any part of the money owning out of Performance

Security of any sum due to the contractor under the said contract.

9. That except in the event of such default on the part of the contractor as

aforesaid interest on the said advance shall not be payable.

10. The Contractor shall execute a promissory note for a sum of

Rs.________________ only in favour of the Employer to provide a collateral

security for the repayment of the advance made to the contractor.


44

IN WITNESS WHEREOF THE _________________________________ and City &

Industrial Development Corporation of Maharashtra Limited have hereby put their

respective hands the day and year first above written.

SIGNED SEALED AND DELIVERED ) BY THE SAID CONTRACTOR IN ) THE PRESENCE OF ) ) SIGNATURE OF

CONTRACTOR

WITNESSES :

1.

2.

SIGNED SEALED AND DELIVERED ) BY AND FOR AND ON BEHALF OF ) CITY & INDUSTRIAL DEVELOPMENT ) CORPORATION OF MAHARASHTRA ) LIMITED ) IN THE PRESENCE OF WITNESSES )

ENGINEER


45

PROMISSORY NOTE (on stamp paper of Rs.100/-)

In terms of para 10 of Indenture Bond we agree to pay a sum of Rs._____________

(Rupees __________________________________________________________________

_____________________) as a collateral security for Contract Agreement No.

__________________________________________________________ for the work of

_________________________________________________________________________

_________________________________________________________________________

_________________________________________________________________ .

For

(Signature of Contractor)

Place :

Date :


46

INDEMNITY BOND

(ON STAMP PAPER OF VALUE OF RS. 100/-)

In consideration of City and Industrial Development Corporation of Maharashtra

Limited, a Company incorporated under the Companies Act, 1956 and having its

Registered Office at “Nirmal”, 2nd floor, Nariman Point, Mumbai - 400 021

(hereinafter referred to as the ‘Employer’, which expression shall unless it be

repugnant to the context or meaning thereof includes it’s successors and assigns)

having awarded the contract of the work of “________________________________

___________________________________” (Name of Work) at an awarded cost of Rs.

________________ to M/s. _____________________________________ (Name of

Agency) a Partnership / Proprietorship / Private Limited / Public Limited firm carrying

in such name and style the business of construction (hereinafter referred to as the

‘Contractor’ which expression shall, unless it be repugnant to the context or meaning

thereof, includes its Proprietor/Partners/Directors for the time being or its surviving

partner or his heirs and executors).

We, M/s. _____________________________________, being the Contractor do

hereby agree and undertake and indemnify and save harmless the Employer in

consequence of the manufacturing defect, latent manufacturing defect and

construction defect found in the constructed works at any time in a period of Five (5)

years commencing with the certified completion date certificate by the Employer to

the Contractors in accordance with and subject to the provisions of the said contract.

It is hereby agreed and declared that the Chief Engineer & General Manager (Tech) of

the Employer or any officer acting on his behalf shall be Competent Authority to decide

upon the question as to the defects in the construction of works and the remedy to be

applied by the Contractor for their rectification at his cost and his decision shall be

final, conclusive and binding upon both the Employer and the Contractor, provided


47

that the Chief Engineer & General Manager (Tech) shall so decide after giving an

opportunity to the Contractor to represent his case.

We hereby agree and undertake irrevocably and unconditionally to carry out duly

each and every decision, order, direction or instruction as may be issued by the said

Chief Engineer & General Manager (Tech) or as the case may be, the Officer of the

Employer in this behalf and to rectify properly and promptly the defects found by

him.

For & On behalf of M/s.______________ _________________________________

Date : (Seal) Notary, Maharashtra State

Before Me

Notary, Maharashtra State Notary and Registered at Serial Number Accepted by : ____________________________

(For & On behalf of CIDCO Ltd.)


48

PROFORMA OF BANK GUARANTEE FOR EMD

(Valid for Min. period of 6 months) (On stamp paper of Rs. 100/-)

To:

The City and Industrial Development Corporation of Maharashtra Limited, ‘Nirmal’, 2nd floor, Nariman Point, Mumbai - 400 021.

1. In consideration of City & Industrial Development Corporation of Maharashtra

Limited, a Company incorporated under the Companies Act, 1956 (I of 56)

and having its registered office at ‘Nirmal’, 2nd floor, Nariman Point,

Mumbai 400 021 (hereinafter called the “Employer” which expression shall

unless repugnant to the subject and context on meaning thereof include its

successors and assigns) having invited tenders in connection with Contract

No. __________________________ dated __________ for the execution of

Civil work of ______________________________________________________

and in further consideration of the Employer having consented to permit

M/s._______________________________________________ (Name of Agency)

(hereinafter called “the Tenderer”, which expressions shall unless be

repugnant on the context and meaning thereof include his heir, executors and

administrators and assign/assigns) to deposit the Earnest Money Deposit of

Rs.____________ (Rupees __________________________________________)

in the form of an unconditional and irrevocable Bank Guarantee furnished by

(Name of Nationalised / Scheduled Bank, Mumbai / Navi Mumbai Branch) in

accordance with the conditions of the said notice inviting the tenders.

2. We the Bank of _____________________________________(Name of Bank),

constituted and established under the Banking companies Act, Acquisition

and Transfer Undertaking Act 1970 - a company incorporated under

Companies Act 1956 and Scheduled Bank, within the meaning of Reserve


49

Bank Act 1934, Clause (e) of Section 2 having our Head office at

__________________________________(Address) do and hereby guarantee,

undertake and agree to pay the Employer a sum of Rs.________________

(Rupees _________________________________________________________)

in the event of the tenderer revoking his tender or; offer or vary or modify any

conditions stipulated in, more particularly specified in para 3.4 of the Notice

of Tender & Instructions to the Tenderers; or further, in the event of the

tenderer failing or omitting to deposit the Contract Deposit in accordance with

Condition No.10.1.1 of the General Conditions of the contract.

3. We, Bank of ___________________________________ further agree that the

Employer shall be sole judge of and as to whether the contractor has

committed any breach or breaches of any of the terms and conditions of the

said contract and the extent of loss, damages, costs, charges and expenses

caused to or suffered by or that may be caused to or suffered by the Employer

on account thereof and the decision of the Employer that the contractor has

committed such breach or breaches and as to the amount or amounts of loss,

damage, cost, charges and expenses caused to or suffered by or that may be

caused to or suffered by the Employer from time to time shall be final and

binding on us.

4. We, the said Bank, further agree that the Guarantee herein contained shall

remain in full force and effect during the period that would be taken for the

performance of the said contract and till all the dues of the Employer under

the said Contract or by virtue of any of the terms and conditions governing

the said contract have been fully paid and it’s claims satisfied or discharged

and till Chief Engineer & General Manager(Tech) certifies that the terms and

conditions of the said contract have been fully and properly carried out by the

contractor and accordingly discharges this guarantee subject however that the

Employer shall have no claim under this Guarantee after completion of the


50

work or from the date of cancellation of the said contract, as the case may

be, unless a notice of the claim under this Guarantee has been served on the

Bank before the expiry of the said period of six months from the date of

receipt of tender i.e. in which case the same shall be enforceable against the

Bank not withstanding the fact that the same is enforced after the expiry of the

said period of six months from the date of receipt of tender

i.e._____________________.

5. The Employer shall have the fullest liberty without affecting in any way the

liability of the Bank under this Guarantee of Indemnity from time to time vary

any of the terms and conditions of the said contract or to extend time of

performance by the Contractor or to postpone for any time and from time to

time any of the power exercisable by its against the contractor and either to

enforce or forbear from enforcing any of the terms and conditions governing

the said contract or securities available to the Employer and the said bank

shall not be released from its liability under these presents by an exercise by

the Employer of the liberty with reference to the matters aforesaid or by reason

of time being given to the Contractor or any other forbearance, act or

omission on the part of the Employer or any indulgence by the Employer to

the Contractor or of any other matter or things whatsoever which under the

law relating to surities would but for this provision have the effect of so

releasing the Bank from its such liability.

6. It shall not be necessary for the Employer to proceed against the contractor

before proceeding against the Bank and the Guarantee herein contained

shall be enforceable against the bank notwithstanding any security which the

Employer may have obtained or obtain from the Contractor shall at the time

when proceedings are taken against the bank hereunder be outstanding or

unrealised.


51

7. We, the said Bank lastly undertake not to revoke this Guarantee during the

currency except with the previous consent of the Employer in writing and

agree that any change in the constitution of the Contractor or the said Bank

shall not discharge our liability hereunder.

8. Our liability under this bond is restricted to Rs._______________ and it will

remain till the __________________, unless an action to enforce the claim

under the guarantee is filed against us before that date all your rights under

the said Guarantee shall be forfeited and we shall be relieved and discharged

for all liability thereunder.

Dated this _____ the day of_________ 20__.

For and on behalf of the Bank

Date :

The above guarantee is accepted by

For & on behalf of the Employer

(Name and Designation)


52

PROFORMA FOR AFFIDAVIT FOR

PRESERVATION OF MANGROVES

(On Stamp Paper of Rs.100/-)

1. On behalf of ________________________________ (Name of Agency) having

its office situated at ________________________________ (Address of Agency)

I, Shri/Smt. ______________________ (Name of person signing affidavit),

authorized signatory, hereby state that we are aware of the directives of

Maharashtra Coastal Zone Management Authority (MCZMA) under section 5

of the Environmental (Protection) Act, 1986 read with provision of CRZ-1991

(as amended from time to time). The Hon’ble High Court in PIL No.3246 of

2005 has issued directions for Preservation of Mangroves. I am aware of

these directions. Further, I undertake to comply these directions in its letter

and spirit while executing the work to stop any destruction or denudation of

mangroves and take necessary care for their preservation applicable in and

around coastal areas of Navi Mumbai in Thane and Raigad District. We are

also aware that in case of failure by us to comply with the above directives,

we may be prosecuted by MCZMA under Section 15 of the Environmental

(Protection) Act, 1986.

2. We further state that we will strictly follow the above directives, (as amended

from time to time), while carrying out the work of _______________________

(Name of Work) awarded by CIDCO vide C.A.No. ____________________.


53

3. We further indemnify and keep indemnified CIDCO, its officers from all

liabilities, consequences arising in future due to the violation of the any of the

directives (as amended from time to time) by us.

Signature

(Name)

Seal of the Firm

Witness

1. Name

Signature

Address :

2. Name

Signature

Address :


54

PROFORMA OF AGREEING TO

GENERAL CONDITIONS OF CONTRACT 1. It is hereby agreed that the General Conditions of Contract comprising

condition Nos. 1 to 71.1, Annexure ’A, ‘B’ & ‘C’, Appendix I to Sub

Clause 67.4 and Appendix II to Sub Clause 67.4 part constituting the

contract and I/We agree to abide by the conditions therein.

2. I/we have read and understood the said General Conditions of Contract

with the Annexures and Appendix and my/our signature/s hereunder

amounts to my/our having signed the above referred General Conditions

of contract as forming part of this contract.

This is to confirm that I have read all the General Condition of the contract and

understood the same.


Date : Date :

Name of work :

C.A.NO. :

Realignment of 36.0 M wide road in Sector-5, near existing ROB at

Dronagiri.

06/CIDCO/EE(DRON-I)/2011-12

Name of work :

C.A.NO. :

Realignment of 36.0 M wide road in Sector-5, near existing ROB at

Dronagiri.

06/CIDCO/EE(DRON-I)/2011-12

1604

��

1608

7

(Sl.Pg.No.55 to 170)(Sl.Pg.No.55 to 170)


171

NOTES AND PREAMBLES TO SCHEDULE OF RATES AND QUANTITIES (SCHEDULE ‘A’)

NOTES & PREAMBLES :

(A) On method of measurement and other relevant matters.

(B) Drafting of Schedule of Rates and Quantities.

(C) Time of Completion.

(D) Deduction of Income Tax.

(E) Deduction of Contract Sales Tax/Turn over tax/Works Contract Tax.

(A) METHOD OF MEASUREMENT AND OTHER RELEVANT MATTERS

1.0 General :

All works shall be measured net as completed. No allowance shall be

made for large or small quantities, narrow width, easy access or difficult

positions or other exceptional circumstances. Any work executed over

and above the dimensions given in drawings or sketches provided by the

Engineer or written instructions by the Engineer shall be ignored and no

payment shall be made for such extra work. In other words, payment

shall be made for authorized works only.

1.1 Tolerance : Dimensions shall be measured to the nearest 0.01 M. Area

shall be worked out to the nearest 0.01 M2 and volume (cubic contents)

shall be worked out to the nearest 0.01 M3.

1.2 Transport : Distance shall be measured by the shortest practicable route

as approved by the Engineer.


172

1.3 Full Provisions : The rates inserted by CIDCO against various items of

work detailed in various parts of Schedule shall be deemed to include

every allowance necessary, without extra measurement or charge for

meeting the requirement of various components/parts of the contract

documents (viz. particular Specifications, B & C Standard Specifications,

B & C Schedule of rates, Special Conditions, Preambles and notes to

Schedule of items, description of Schedule of items which shall all be

read together and any or all of the following unless specifically provided

for the contrary.

a) Compliance with all the conditions of contract including General

Conditions of Contract, Schedule of Quantities, Particular

Specifications, Drawings including notes thereon, Specifications in

Standard Specifications of B&C Department, relevant Indian Standard

where applicable. However, in case of any discrepancy between

drawing and tender, the tender item and specification shall prevail.

b) All labour, materials, tools and plants, equipment’s and transport, which

may be required in preparation for and in the full and entire execution

and completion of the works including waste in materials, carriage and

cartage, carrying in, return of empties, hoisting, setting, fittings in

position.

c) Local conditions: Nature of works, local facilitates for supply of labour

and materials, accessibility’s to sites and all other matters, affecting the

execution and completion of the works.

d) Duties etc : Payment of any Octroi, Terminal Tax, Sales Tax, Royalty,

Turnover Tax, Contract Sales Tax, Toll Tax, Ground Rent, Environmental

Cess or any duties on materials obtained for the works and any duties in

respect of patent rights. Cess as per BPMC Act and its amendments.


173

e) Supervision : Competent supervision of the work.

f) Labour : Reasonable terms and conditions of employment, liability to

pay compensation, wages as per statutory enactment’s, temporary

accommodation, sanitation etc. compliance with Contract Labour Act.

g) Water: Provision of all water required including temporary plumbing

and connection.

h) Temporary Workshops, Stores, Office, Labour Camps etc. : Provisions

of such structures required for efficient execution of the works and

removing and cleaning up site on completion of works.

i) Precaution against risk : Precautions to prevent loss or damage from all

or any risk, insurance of sheds or any temporary accommodation

provided by CIDCO, watching & lighting, provisions pertaining to the

General Conditions of Contract.

j) Notices, Fees etc. : Compliance with statutory provisions of regulations

and/or bye-laws of any local authority including NMMC and/or any

public service company or authority affected by the works.

k) Setting the works including all apparatus required.

l) Site Drainage: Removal of all water that may accumulate due to

springs, sub soil water, flood/tides and any other causes on the site

during the progress of the work.

m) Execution of work in workmanlike manner, facilities for inspection etc.


174

n) Rectification of Bad Work : Rectification and/or removal and

reconstruction of any work which (as decided by the Engineer) has been

executed with unsound or imperfect materials or unskilled workmanship

or of a quality inferior to that contracted for, whether during

construction or reconstruction prior to the expiry of the Defect Liability

period.

o) Responsibility for damage and loss of all construction materials etc., at

the site until handing over to CIDCO.

p) Removal of Rubbish: Removal of rubbish and debris and cleaning of

any dirt before handing over of all completion works.

q) Cleaning site and works : Removal by the Contractor off the site, of any

tools, plants and materials and removal of splashes of asphalt leaving

the whole site neat and tidy.

r) Completion: Completing the work to the satisfaction of the Engineer on

or before the date of completion.

s) Difficult position: Accessibility or otherwise to site, easy or difficult

positions in works.

t) Errors: Rectification of all errors to the satisfaction of Engineer.

u) Curved work etc. : Work of any quantity, size or shape whether level,

inclined, curved, battered etc.

v) Maker’s Instructions: Compliance with maker’s instructions in the case

of proprietary articles, factory made goods of precast items.


175

w) Waste: All waste, laps, seams, joints (rough or fair cuttings)

straight/raking, circular and making good.

x) Artificial Light: To include all lighting/kerosene or electric power as the

case may be when need arises for use of lighting while carrying out

works.

y) Construction of approaches to the site of work. Making arrangement

for proper access to works in the form of stairs, ladders, lifts, etc. as

ordered by the Engineer-in-charge for proper supervisions, testing and

or inspection of works.

z) All the expenses required towards testing of materials and/or works. All

expanses towards contractor’s all risk insurance policy

(B) BRIEF NOTES ON DRAFTING OF SCHEDULE OF RATES AND

QUANTITIES

2.0 The tender has been drafted on the basis of pre-priced schedule of rates

and quantities for different types of items.

2.1 All the tender items are generally priced as per schedule of rates of

Public Works Department of Thane Division for the year 2010-11

and/or CIDCO Schedule of rates for the year (2010 – 11).

2.2 The Contractors are requested to work out their own rates based on the

detailed description of Schedule ‘A’ items, the specifications and

drawings and finally arrive at the cost of the work in the appropriate

place. The contractor shall insert percentage cost over CIDCO’s cost to

arrive at the contract value for the work.

(C) TIME OF COMPLETION

3.0 The period of completion of works enumerated under Schedule ‘A’ shall

be as mentioned in Annexure ‘A’ from the date of placing the work

order or date of handing over the site whichever is earlier.


176

(D) DEDUCTIONS OF INCOME TAX

4.0 Deduction of Income Tax shall be at the rates stipulated by Income Tax

authorities and the amounts shall be deducted from every running bill

submitted by contractor.

(E) DEDUCTION OF CONTRACT SALES TAX/TURNOVER TAX

5.0 The contractors are required to produce their registration for contract

sales tax/turnover tax/works contract tax & cess tax to the department

before releasing the 1st Monthly Payment for the work executed by

them, failing which, no payment shall be released.

(F) TAXES & DUTIES

6.0 As per Clause No. 70.2 of General Conditions of Contract.


Date : Date :


177

Name of Work : Realignment of 36 m wide road in Sec-5, Near Existing ROB at

Dronagiri.


SCHEDULE – “A”

PART – I : ROAD

Sr. No.

Description of Item Quantity Rate Unit Amount

1) Excavation for roadways in all types

of soil, soft murum, hard murum,

hard murum with boulders, in all

conditions and nature, including

clearing and stripping of the area,

removal of vegetation, shrubs, taking

spot levels, excavating to required

depth, line, level and slope, leveling

and dressing and consolidating the

excavated surface, dewatering by all

means upto any extent of water

accumulated from any source,

sorting out and stacking serviceable

and unserviceable materials etc.

complete including conveying the

excavated material with all lifts and

upto a lead of 50 mtr & its spreading

or stacking as directed, etc.

complete.

Note : All payments towards the

royalty, fees, taxes etc. shall be borne

by the contractor.

250.00 175.35 Cum 43837.50


178

Sr. No. Description of Item Quantity Rate Unit Amount

2) Excavation for foundation / pipe

trenches in slush muddy / marshy /

slushy / soil, including use of poclain,

labour for dewatering during

execution including removing the

excavated material up to a distance

of 50 mtrs. and lifts as below,

stacking and spreading as directed,

preparing the bed by cleaning the

mux, labour required for execution

for shuttering item but excluding back

filling etc. complete. Providing and

fixing shuttering shall be paid

separately.

250.00 321.70 Cum 80425.00

3) “Providing earthwork in embankment

with approved materials obtained

from Contractors own source

including all leads and lifts, laying in

layers of 20 to 30cms in thickness,

breaking clods, dressing to the

required lines, curves, grades, and

section with watering & compacting

with vibratory power roller etc.

complete.

Notes:-

1. All payments towards the royalty,

fees, taxes etc. shall be borne by

the contractor.

30825.00 338.34 Cum 10429330.50


179


2. The Environmental cess shall be

recovered at Rs.1/m3 of gross

volume computed without

deductions as mentioned for the

Monthly Payment or Final Bills.

3. P.D. Tests shall be carried out @

one test comprising of 3

specimens average result per

1000 m2 area.

4. Compaction upto 95% Modified

P.D. and the laboratory soil dry

density shall be not less than 1.6

g/cc. at Optimum moisture

content.

5. The gross volume of the

embankment shall reduced by

5% for Monthly Payment and 1%

for Final Bill payments.

4) Providing earthwork in embankment


from cutting, including all leads and

lifts, laying in layers of 100 to 120

cms in thickness, breaking clods,

dressing to the required lines, curves,

grades, and section with watering

and compacting with static rollers etc.

complete.

NOTES :-



the contractor.

1505.00 226.29 Cum 340566.45


180







3. For Embankment of any height

with watering and compaction

without P.D. but laying in layers

of 100 to 120 cms and the

laboratory soil dry density shall

be not less than 1.52g/cc. at

Optimum moisture content. (In

water logged areas)



15% for Monthly Payment and

10% for Final Bill payments after

one lapse of monsoon.

5) “Providing earthwork in embankment


from Contractors own source

including all leads and lifts, laying in

layers of 20 to 30cms in thickness,

breaking clods, dressing to the

required lines, curves, grades, and

section with watering & compacting

with vibratory power rollers etc.

complete.

12755.00 338.74 Cum 4320628.70


181


NOTES:-



the contractor.









1000 m2 area.



density shall be not less than

1.75 g/cc. at Optimum moisture

content.





6) Providing & laying granular sub-base

(GSB) as per clause 401 of

M.O.R.T.&H (2001) specifications of

specified grading (Table 400-1 or

400-2) in specified thickness in

layers. The item to include premixing

the materials in plant, transportation


182


to site, spreading in uniform layers

with motor grader on a prepared

subgrade, compacting with vibratory

rollers till 98% of the maximum dry

density (IS 2720 part-8) is achieved

etc. Complete. The rate includes for

tests on completion of each GSB

layer. The strength of each GSB layer

shall be evaluated by conducting

CBR (IS 2720 Part 16 & 31) or Plate

load test using 750mm dia. Plate, (IS

9214) for obtaining equivalent CBR

value @ one test per 3000 m2

compacted surface area as per the

Grading. The item includes for all

necessary material, labour,

diversions, taxes, royalty, cess etc

complete.

a) For GSB-III of close-graded GSB

material with minimum CBR

value of 20% (As per IS 9214-

1979) to be obtained on top of

the compacted layer. (Lower sub-

base)

2551.00 723.25 Cum 1845010.75

b) For Grading-II of close-graded

GSB material with minimum CBR

value of 25% (As per IS 9214-

1979) to be obtained on top of

the compacted layer.

(Intermediate sub-base)

2551.00 688.40 Cum 1756108.40


183


c) For GSB-I of close-graded GSB

material with minimum CBR

value of 30% to be obtained on

top of the compacted layer.

(Upper sub-base).

2551.00 683.10 Cum 1742588.10

7) Providing & laying Granular Base of

Wet Mix Macadam (WMM) as per

clause 406 of M.O.R.T.&H (2001)

specifications of specified grading

(Table 400-11) in specified thickness

in layers. The item to include

premixing the materials in plant,

transportation to site, spreading in

uniform layers with paver on a

prepared sub-base, compacting with

vibratory rollers till 98% of the

maximum dry density (IS 2720 Part-

8) is achieved etc complete. The rate

includes for tests on completion of

each WMM layer. The strength of

each WMM layer shall be evaluated

by Plate load test with 750 mm dia

plate. (IS 9214) for obtaining

equivalent CBR value @ one test per

3000 m2 compacted surface area as

per the Grading. The item includes

for all necessary material, labour,

diversions, taxes, royalty, cess etc

complete. (CBR – 60 on WMM)

3222.00 1025.50 Cum 3304161.00


184


8) Providing and applying low viscosity

liquid bituminous material such as

bitumen emulsion or cut back or

road tar complying to relevant IRC/IS

code of approved type and grade by

a self propelled or towed bitumen

pressure sprayer as per clause No.

502 of Specifications for road and

bridge works (M.O.R.T.& H.,2001).

The item includes for preparation of

the base, application of the prime

coat, curing, relevant tests for quality

control as enumerated in table 900-

4, diversion of traffic, etc. complete.

The rate shall include for all labour,

materials, machinery, transportation,

taxes etc. complete”

a) For low porosity surfaces such as

WMM/WBM at an application

rate of 0.6 to 0.9 kg/sqm.with

kinematic viscosity of primer at

60 degree ranges between 30-

60 centistokes

21480.00 32.30 Sqm 693804.00

9) Providing and constructing

Bituminous Bound Macadam (BBM)

surface 75 mm thickness including

supplying all materials including

metal, bitumen etc. spreading 40

21480.00 176.65 Sqm 3794442.00


185


mm hand broken trap metal 9 cum

per 100 m2 and 20 mm trap metal

at the rate of 1.5 cum/100 sqm.,

heating and spreading bitumen

(excluding tack coat) at 250 kg./100

m2, spreading 12 mm size key

aggregate at the rate of 1.8

cum/100 sqm and compaction with

vibratory roller complete. Grade of

bitumen shall be 60/70.

10) Providing and applying low viscosity

liquid bituminous material such as

bitumen emulsion complying to IS

8887 of approved type and grade by

a self propelled or towed bitumen

pressure sprayer as per clause No.

503 of Specifications for road and

bridge works (M.O.R.T.& H., 2001).

The item includes for preparation of

the base, application of the tack coat,

curing, relevant tests for quality

control as enumerated in table 900-

4, diversion of traffic, etc. complete.

The rate shall include for all labour,

materials, machinery, transportation,

taxes etc. complete.

a) For Normal bituminous surface

at an application rate of 0.2 to

o.25 kg/sqm.

21480.00 12.50 Sqm 268500.00


186


11) Providing and laying 20 mm thick

hot mix hot laid pre-mix Seal Coat

(SC) composed of 11.2 mm to .09

mm (type a) or 13.2 mm to .09 mm

(type b) aggregate using 60/70

grade bitumen @ 22kg/10 sqm as

per MORT&H-512 including

supplying all materials, heating

bitumen, mixing bitumen and chips

in hot mix plant, laying the seal coat

by sensor paver finisher including

compaction with vibratory roller etc.

complete. The grade of bitumen

shall be 60/70. The rate is inclusive

of all types of taxes.

(Excluding tack coat)

21480.00 118.55 Sqm 2546454.00

12) Laying concrete pipes of IS NP-2

class of 300mm dia. diameter in

proper line, level and slope including

necessary collars, testing, excavation,

laying, fixing with collars in cement

mortar 1:1 and refilling the trench

etc. complete.

120.00 426.00 Rmt 51120.00

13) Providing PCC precast factory made

kerb stone of 500x400x150 mm size

in M-25 grade of concrete using

design mix with minimum cement

content as per IS 456 for moderate

402.00 531.95 Rmt 213843.90


187


exposure condition including fixing in

PCC 1:2:4, 250 mm thick, filling the

joint with CM 1:3, pointing in CM

(1:3) on exposed face etc. complete

including painting in two coats of oil

paint to exposed surfaces, one coat

of primer and excavation and

disposal of excavated material,

making good the road etc. complete.

The rate is inclusive of all types of

taxes.

14) Providing & fixing parabolic shape

RCC precast-factory made M25

Grade kerb stone using design mix

with minimum cement content as per

IS 456 of size 500/200/850 mm as

per detailed design and drawing

including excavation, fixing in PCC of

M-15 grade bed 100 mm thick

including side concreting, filling joints

in cement mortar (1:3) disposal of

excavated material, including

painting in two coats of oil paints

and one coat of primer to exposed

faces, transportation to site, labour,

providing & fixing steel reinforcement

@ 60 Kg/M3, etc. complete. The

rate inclusive of all type of taxes.

2000.00 1042.38 Rmt 2084760.00


188


15) Providing & laying in situ cement

concrete M-20 of trap metal for

foundation and bedding, including

bailing out water manually,

formwork, compacting and curing.

32.00 4680.00 Cum 149760.00

16) Providing and Constructing B.B.

masonry valve chamber with 15 cm

thick 1:3:6 proportion PCC bedding,

excluding excavation, B. B. Masonry

in C.M. 1:5 Proportion precast RCC

frame and cover, etc. complete as

directed by Engineer-in-Charge.

(Note : Wall thickness : 0.23 M for

depth of 1.2 M and 0.35 M for

balance depth exceeding 1.2 M)

15.00 4100.00 No. 61500.00

17) Conducting lab CBR test as per IS-

2720 (Part-16) 1987 The item shall

includes necessary cost for sample

collection and transporting it to soil

testing lab. The rate includes for

testing of minimum 3 specimen. If

the test results of initial 3 specimen

deviate more than that specified in

Table 2 of clause No. 3, 4, 6, 4 of

IRC 37 (2000) then additional 3

specimen shall be got tested at no

extra cost. The rate includes for all

necessary ancillary tests mentioned in

appendix “A” of IS 2720 (Part-16)

7.00 2460.00 No. 17220.00


189


viz. Proctor density test, swell

pressure test etc. The appropriate

surcharge Wt. shall be provided

while testing the specimen. The item

shall include all cost of necessary

excavation at site. The test results

shall be submitted in report form with

observation sheet graph, tabular

form and inference it any.

TOTAL 33744060.30

Total carried over to summary of Schedule “A” on Sl.Pg. No. 201.


190

Name of Work : Realignment of 36 m wide road in Sec-5, Near Existing ROB at

Dronagiri.


SCHEDULE – “A”

PART – II : S.W. DRAIN


1) Excavation for foundation to any

depth in all types of earth, soils of all

types such as sand, gravel, slush,

soft murum, hard murum with or

without boulders including shoring

and strutting whichever necessary

including disposing off the surplus

materials within 50m, beyond the

work site, stacking and spreading as

directed. The item includes heavy

dewatering by using pumps or

manually, shoring, strutting and

preparing the bed for foundation

and necessary back filling etc.

complete.

NOTE :

All payments towards the royalty,

fees, taxes etc. shall be borne by the

contractor.

475.00 175.35 Cum 83291.25

2) Excavation for foundation / pipe

trenches in slush muddy / marshy /

slushy / soil, including use of

poclain, labour for dewatering

55.00 321.70 Cum 17693.50


191


during execution including removing

the excavated material up to a

distance of 50 mtrs. and lifts as

below, stacking and spreading as

directed, preparing the bed by

cleaning the mux, labour required

for execution for shuttering item but

excluding back filling etc. complete.

Providing and fixing shuttering shall

be paid separately.

3) “Providing earthwork in

embankment with approved

materials obtained from Contractors

own source including all leads and

lifts, laying in layers of 20 to 30cms

in thickness, breaking clods, dressing

to the required lines, curves, grades,

and section with watering &

compacting with vibratory power

roller etc. complete.

Notes:-



the contractor.





Monthly Payments or Final Bills.

1750.00 338.34 Cum 592095.00


192





1000 m2 area.



density shall be not less than 1.6

g/cc. at Optimum moisture

content.





4) Providing and laying dry trap metal

soling 23 cm. thick including hand

packing with metal, rubble chips,

application of required murum/stone

dust blindage and compaction

including watering etc. complete with

all leads, including necessary heavy

dewatering either mechanically or

manually etc. complete.

360.00 417.00 Cum 150120.00

5) Providing stone columns including

boring of required 650 mm dia.

Providing & laying tubular gabion,

filling the sand etc. complete.

(The rate is inclusive of boring

required for stone columns)

940.00 1799.44 Rmt 1691473.60


193


6) Providing & laying in position geocell

CE121 for bottom surface and CE

153 Netlon of 0.38M width making

Geo Boxes of size 600x600x380mm

complete.

a) CE 121 1325.00 342.19 Sqm 453401.75

b) CE 153 2150.00 312.85 Sqm 672627.50

7) Providing and fixing polymer /

Bamboo bodking with ropes as per

drawing for fixing and jointing of

Netlon CE153 and as directed by

EIC etc. complete.

4350.00 31.30 No. 136155.00

8) Providing & laying well graded

machine crust aggregate etc

complete.

305.00 593.00 Cum 180865.00

9) Compacting the top surface well

graded filled in boxes by mechanical

means etc. complete.

810.00 14.00 Sqm 11340.00

10) Providing and laying in situ Ready

Mix Cement Concrete M20 grade

using design mix with minimum

cement content as per IS 456 with

maximum water cement ratio 0.45

using maximum 25/30 mm size and

down trap metal for foundation and

bedding/PCC Raft with all labours,

materials, plant & equipments,

shuttering form work, staging,

260.00 5846.00 Cum 1519960.00


194


including transporting, placing

vibrating with mechanical vibrator,

finishing and curing etc. complete.

The item also includes heavy

dewatering by using pumps or

manually. The cost also includes all

types of taxes, sales tax, insurance,

cess levied by local authority etc.

complete.

11) Providing and casting RMC M20

grade of concrete using design mix


IS 456 in situ controlled concrete using

maximum 25mm / 30mm size and

down graded aggregate of trap metal

for PCC abutments, walls, pardi,

hatnches etc. as per detailed drawing,

with maximum water cement ratio of

0.45 (for severe condition) as directed,

with contractors labours, materials,

plant & equipments, scaffolding,

shuttering, form work, staging


vibrating with mechanical surface

vibrator and all lifts and leads, curing,

adding required dosages (as per the

manufacturers recommendations) of

approved plasticiser as admixtures

62.00 7867.50 Cum 487785.00


195


(excluding cost of reinforcement). The

item includes heavy dewatering to any

extent by any means. The cost also

includes all types of taxes, exice duty,

sales tax, insurance, cess levied etc.

12) Providing and casting RMC M30



IS 456 in situ controlled concrete using



for RCC raft foundation as per

detailed drawing, with maximum

water cement ratio of 0.45 (for severe

condition) as directed, with contractors

labours, materials, plant &

equipments, scaffolding, shuttering,

form work, staging including

transporting, placing vibrating with

mechanical surface vibrator and all

lifts and leads, curing, adding

required dosages (as per the




item includes heavy dewatering by

using pumps or manually. The item

includes performing NDT as directed.

The cost also includes all types of

taxes, sales tax, insurance, cess levied

by local authority etc. complete.

200.00 6189.00 Cum 1237800.00


196


13) Providing and casting M30 grade of

concrete using design mix with

minimum cement content as per IS

456 in situ controlled concrete using



for RCC abutments, walls, pardi,

haunches etc. as per detailed drawing,

with maximum water cement ratio of

0.45 (for severe condition) as directed,

with contractors labours, materials,

plant & equipments, scaffolding,

shuttering, form work, staging


vibrating with mechanical surface

vibrator and all lifts and leads, curing,

adding required dosages (as per the





extent by any means.

345.00 8185.00 Cum 2823825.00

14) Providing and casting M30 grade of

concrete using design mix with

minimum cement content as per IS

456 in situ controlled concrete using



for approach slab and RCC slab etc.

as per detailed drawing, with

250.00 7962.00 Cum 1990500.00


197


maximum water cement ratio of 0.45

(for severe condition) as directed, with

contractors labours, materials, plant &

equipments, scaffolding, shuttering,

form work, staging including

transporting, placing vibrating with

mechanical surface vibrator and all

lifts and leads, curing, adding

required dosages (as per the





extent by any means. The cost also

includes all types of taxes, excise duty,

sales tax, insurance, cess levied etc.

15) Providing and placing, fixing in all

RCC item of foundation, sub-

structure and superstructures,

M.S./H.Y.S.D./T.M.T. of various

diameters as per IS 432 (latest

version) of approved make for

reinforcement in any position as per

detailed drawing or as directed for

all diameters including, cutting,

bending in shape, fixing in position

with galvanised binding wire of 17

guage or tack welding as per IS

9417 (latest version) as directed etc.

complete including dewatering using


198


pumps or manually during placing

reinforcement and keeping dry

during concreting of RCC members.

The cost also includes all types of

taxes, excise duty, sales tax,

insurance, cess levied by local

authority etc. complete.

Note :- The quantity to be measured

and paid for this item shall not

include wastage in cutting. Actually

installed and placed in position steel

shall be paid for including hooks,

laps, bends, pins and chairs. No

separate payment shall be made for

binding wire or tack welding.

a) Mild Steel 0.00 36331.00 MT 0.00

b) HYSD Steel/TMT Steel 52.00 47749.00 MT 2482948.00

16) Providing and fixing 100 mm dia

AC/PVC pipes for weep holes,

staggered as per drawing or as

directed by Engineer-In-Charge etc.

complete.

360.00 89.00 Rmt 32040.00

17) Providing trap rubble filling behind

the walls / abutments / returns

including filling voids with gravel,

hand packing and compacting the

rubble etc. complete.

700.00 347.00 Cum 242900.00

18) Providing and fixing precast RCC

slab of 100 mm thickness in M-25

400.00 1368.65 Sqm 547460.00


199




IS 456 as per detailed design and

drawings or as directed with fixing of

3 mm thick M.S. plate around the

slab for inspection opening for S. W.

Drain including compaction, curing

and finishing uneven and honey

combed surface with cement mortar

1:3 of sufficient minimum thickness

to give a smooth and even surface

including reinforcement. The rate is

inclusive of all types of taxes.

19) Providing and fixing precast RCC

beams of size 150x150 mm over SW

Drain in M-25 grade of concrete

using design mix with minimum

cement content as per IS 456 as per

detailed design and drawings or as

directed including steel centering,

compaction, curing and finishing

uneven and honey combed surface

with cement mortar 1:3 of sufficient

minimum thickness to give a smooth

and even surface including providing

& fixing steel reinforcement @ 60

Kg/M3. The rate is inclusive of all

types of taxes.

950.00 201.85 Rmt 191757.50


200


20) Disposal of excavated material

beyond 0.5 km and upto 1 km lead

(dumping yard) including loading,

unloading, transporting by

mechanical or other means,

stacking, spreading, leveling as

directed by Engineer-in-charge etc.

complete beyond initial lead of 50m.

410.00 55.15 Cum 22611.50

21) Providing expansion joints in R.C.C.

framed structure (interior columns)

with plain premoulded filler 25 mm

thick, including fixing T.W. battens

both faces and complete as directed.

45.00 1577.00 Sqm 70965.00

TOTAL 15639614.60

Total carried over to summary of Schedule “A” on Sl.Pg. No. 201.


201


at Dronagiri.

SUMMARY OF SCHEDULE - 'A' PART DESCRIPTION AMOUNT

I ROAD WORKS 3,37,44,060.30

II S.W.DRAIN 1,56,39,614.60

(A) TOTAL OF SCHEDULE “A” RS. 4,93,83,674.90

(B) ADD/SUBTRACT (+/-) ______% QUOTED RS. BY THE CONTRACTOR TO REFLECT THE TOTAL COST.

(C) GRAND TOTAL (A) +/- (B) RS.

(Rupees _____________________________________________________________

_______________________________________________________________ Only)

NOTES :

1) It is compulsory to fill the amount both in words and figures. 2) This is to confirm that I have read carefully instruction No. 3.8.1 to 3.8.4 on

Sl.Pg.No. 12 of the Tender and I understand that my tender is liable to be rejected if I fail to submit the offer in accordance with the various provisions and do not comply with the stipulations.

3) I, understand that my tender is liable to be rejected if I fail to fill the amount both in words and figures.


Date : Date :


202

A N N E X U R E - ‘A’


at Dronagiri.

Revised G.C.C.

Clause No.

1.1(a)(iv) The Engineer for the Contract : Name : Shri. Manjit Singh Designation : Executive Engineer (Dron-I)

43.1 Time for completion (inclusive of monsoon)

A. Contract as whole : 12 (Twelve) Months (including Monsoon)

B. Sections (Part of Groups of Items) i) ii)

: Not Applicable

49.1 Defect Liability period i) ii)

: : :

12 (Twelve) Months

49.4 Percentage to be charged as

supervision charges for the work

got executed through other means

: 24.5%

60.10 The rate of interest applicable for

payment delayed

: 6% p.a.

70.1 i) Centre for Price Variation Indices

: Mumbai

ii) Price Variation Clause Factors

:

PL : 17%

PM : 78%

PF : 05%

TOTAL : 100%


203

iii) Base Materials and Base Rates Applicable for the price variation

clause shall be as under:

Base Rate of Cement : Rs. 6,325.00 per M.T.

Base Rate of Bitumen 60/70 : Rs. 44,281.00

Base Rate of Mild Steel : Rs. 52,100.00 per M.T.

Base Rate of HYSD Steel : Rs. 52,100.00 per M.T.

Base Rate of TMT Steel : Rs. 52,100.00 per M.T.

Base Rate of POL : Rs. 48.01 / Lit.


Date : Date :


204

SCHEDULE ‘B’

(Material to be issued to contractor by CIDCO)

Sr. No.

Particular of Materials

Rate of which material will be issued in

Rs. Ps.

Place of issue

Rate of Recovery in case of misuse or

excess consumption

============== NIL ==============

No material will be supplied by CIDCO

1. This Schedule consists Nil item only.


Date : Date :


205

GENERAL SPECIFICATIONS

GENERAL SPECIFICATIONS FOR

CONCRETE PLAIN & REINFORCED / CAST-IN-SITU / READY MIX CONCRETE

Providing and casting in situ concrete of various grades shall be in

accordance with IS : 456-2000 (latest version) and IS : 4926 (latest

version). The specifications for all the allied activities such as mix design,

taking trial mixes, finalizing the mix, acceptance criteria, testing, shuttering,

formwork, transportation, placing, compaction, curing etc. shall be as per

the IS : 456-2000 (latest version), IS : 4926 (latest version) and other

relevant IS standard. Contractor shall follow the specified test frequencies

for all the ingredients including concrete mix as per the IS : 456-2000

(latest version) and IS : 4926 (latest version).


Date : Date :


206

PARTICULAR SPECIFICATIONS (ROAD WORKS)

1.0 GENERAL

The Particular Specifications are to be read in conjunction with the

specifications contained in the description of items of Schedule “A”

specification contained in “Standard Specifications” published by

Buildings and Communications Department of Maharashtra, relevant

Indian Standard Specifications. In case of conflicting provisions in

various documents (except Schedule “A”), the provisions in Particular

Specifications shall take precedence over any other documents.

2.0 CLEARING SITE :

The ground over which the Roads are to be constructed shall be

cleared from all loose, vegetation, bushes, stumps and all other

objectionable materials. Brushwood, stumps, vegetation etc. shall be

cut flush with the ground. Materials obtained from clearing site shall

be disposed off as directed.

3.0 Excavation for roadways to any depth in all types of earth, soils such

as sand, gravel slush, soft murum, hard murum with or without

boulders with all lifts and upto 1.5m depth including disposing off

the surplus materials within 50m. beyond the work site, stacking and

spreading as directed including payment of royalty charges, fees,

taxes etc.

3.1 GENERAL:

Roadway and drainage excavation shall consist of excavation,

removal, conveyance and satisfactory disposed of materials of the

strata covered by the wording of the item for the construction of the

road and its drainage including finishing the surface and the slopes


207

to the required grade, lines, levels, curves and sections shown on the

plans or as directed by the Engineer. The item also covers

maintaining the work in finished condition until taken over by the

Department.

3.2 CLEARING SITE:

The land width required for the roadway, gutters, side slopes and

catchwater gutters shall be cleared of all trees having a girth of

30cm (about 1’) and less, brushwood, loose stones, vegetation,

bushes, stumps and all other objectionable materials. The roots of

trees shall be removed to a depth of 30cm (about 1’) below the

surface of the road formation and side slopes and the excavation

filled up with excavated materials in 15cm to 20cm. (about 6” to 8”).

Layers and compacted, Brushwood, stumps, vegetation, etc. shall be

cut flush with the ground. All the materials cleared will be the

property of CIDCO. Useful materials shall be arranged in convenient

stacks along the road boundary or as directed at places within lead

of 50 meters (164’) and handed over to the Department in

convenient sections. Unsuitable materials shall be burnt or otherwise

disposed of by the contractor at his own cost as directed by the

Engineer without crushing any nuisance inconvenience or damage to

the work, property or people in the neighborhood. If the material is

disposed of outside the road land, necessary permission from the

private land owners shall be taken by the contractor and royalty etc.,

if any paid by him without claiming compensation. In all cases, the

materials shall be disposed of in a neat manner.

3.3 SETTING OUT:

After clearing the site, the alignment of the road shall be properly set

out true to lines, curves, slopes, grades and sections as shown on the


208

plans by total station by appointing reputed surveyor as directed by the

Engineer. The contractor shall provide all labour and materials such as

lime, string, pegs, nails, bamboos, stones, mortar concrete etc.,

required for setting out, establishing Bench Marks and giving profiles.

The contractor shall responsible for maintaining the B.Ms., profiles

alignment and other stacks and marks as long as they are required for

the work in the opinion of the Engineer. If the contractor defaults in this

respect even after direction by the Engineer within the specified time,

they may be restored by the Engineer at the cost of the contractor.

Levels and sections of the ground shall be taken and recorded in the

presence of the contractor or his authorized representative before the

excavation is started to serve as the basis of measurement. The

contractor or his representative shall sign the book in token of his

acceptance of the level etc. If there is any disagreement, the contractor

shall inform of it in writing to the officer concerned with specific

reference to the sections before starting further work. Once further work

is started, no cognizance of any complaint shall be taken. Merely not

signing of the book shall not be deemed as disagreement.

3.4 CLASSIFICATION OF EXCAVATION:

All the materials encountered in the excavation would be mainly classified in the following groups:

1) Soils of all sorts, sand, gravel, soft murum and other similar soft or loose materials.

2) Hard murum.

3) Hard murum and boulders.

4) Soft rock.

5) Hard rock (blasted).

6) Hard rock (chiseled, wedged or line drilled)

7) Laterite

8) Slush / Marine Clay


209

1) Soil of sorts, sand, gravel, soft murum and other similar soft or

loose materials. :

Soils of all sorts, sand, gravel soft, murum, chopan yellow soil. etc.,

shall included all material of earthy nature which can be easily

ploughed or small shingle and gravel which can be easily remove.

Removal of small boulder not exceeding 0.03 cu.m. or 30 litres (about

one c.ft.) accruing in the strata will be included in the rate for this item.

2) Hard murum :

This shall include all kinds of disintegrated rock or shale or indurated

clay free from boulders larger than 003cu.m. or 30 litres (about one

cu.ft.) and can be removed with pick and shovel though not without

some difficulty.

3) Hard Murum & Boulders :

This shall include all kinds of disintegrated rock or shale or indurated

clay interspersed with boulders less than half cubic metre (about half a

cu.yd) and larger than 0.03 cu.m. or 30 litres (approx one c.ft.) which

do not normally need blasting and can be removed with pick, bar,

wedges, and hammer. Boulders bigger than ½ cu.m. will be paid for as

soft or hard rock according as it is soft or hard rock.

4) Soft Rock:

This shall include all materials which is rock or hard conglomerate, all

decomposed and weathered rock, highly fissure rock, old masonry and

also soft rock, boulders bigger than ½ cubic meter with pick, crow bars,

wedges and hammer with some difficulty.

5) Hard rock (chiseled wedged or line drilled):

This shall include all rock occurring in masses which can best be

removed by blasting but which owing to the proximity of structures,

possibility of shattering the rock below or for any other reason should

be cut by a means of cold chisels or wedges or line drilling.


210

The classification of the excavation would be decided by the Engineer

and his decisions shall be final and binding on the contractor. Merely

the use of explosives in excavation will not be considered as a reason

for higher classification unless blasting is clearly necessary in the

opinion of the Engineer.

6) Laterite :

This shall include laterite rock soft and hard which can be removed with

Dhokans or blasting. Lateritic murum which has not hardened into

stone shall be classified as hard murum.

7) Slush / Marine Clay :

This items includes clearing the land width of all shrubs, weeds, bushes

etc. the work will also have to be done in the area subject to the tidal

water. The work is to be executed as directed by the Engineer. The slush

(Marine clay) is to be removed on top of hard strata such as murum,

weathered rock, soft rock, hard rock etc., whichever is met earlier,

which is suitable to lay embankment foundation on such suitable strata.

The excavated stuff to be deposited as per direction of Engineer as per

site situation. For excavation in slush Contractor shall use machinery

like mechanical excavators or any other suitable type of mechanical

equipment and other machinery for transporting excavated lush for

speedy execution. For removing slush wherever necessary, if earthen or

rubble bunds are required, the same shall be provided by the

Contractor at his cost as per directions of Engineer.

The classification of the excavation would be decided by the Engineer

and his decisions shall be final and binding on the contractor. Merely

the use of explosives in excavation will not be considered as a reason

for higher classification unless blasting is clearly necessary in the

opinion of the Engineer.


211

3.5 CONSTRUCTION METHOD:

Profiles of the section including the road side gutters to be excavated

shall be laid at suitable intervals of 10 m.(about32.8’) to 50m. (about

64) or other intervals directed by the Engineer to conform to the curved

or straight alignment, section grades and side slopes. The lines of cuts

shall be clearly marked and profiles of embankments where excavated

materials are to be used shall be set up with the toe line marked on

each side. The roadway section shall be first excavated with vertical

sides for each lift and the side slopes for that lift shall be excavated in

steps.

These steps shall be smoothened to the required slopes, when the

excavation reaches the road formation. The contractor shall on no

account excavate beyond the slopes or below the specified grade

unless so directed by the Engineer in writing. If excavation is done

below the specified level or outside the section., it shall not be paid for

and the Contractor shall be required to fill up at his own cost such extra

excavation in the road portion with approved materials of the

embankment grade in layer of 15cm. to 20cm. (about 6” to 8”)

watered and fully compacted to attain maximum density laid down for

the embankment in the same agreement elsewhere. The Engineer

may require measurement ridges and deadmen to be left at specified

interval or places and kept intact till ordered to be removed for the

purpose of check measurements. The excavation shall be finished

neatly, smoothly and evenly to the correct lines, curves, grades sections

and side lopes a shown on the plans or directed by the Engineer. The

sub-grade if loose shall be scarified , watered and compacted to the

same density as the embankment. The section, side slopes and

catchwater gutters shall be maintained by the contractor at his own cost

in such a way the formation and gutters will be well drained by

providing necessary diversions. etc. and not damaged due to

obstruction of any drainage. Necessary passages shall be provided for


212

leading away seepage, springs, surface flow or rain water safely

without damaging the work. If any damage occurs due to default of the

contractor in this respect, he shall make good the damage at his own

cost. If it is necessary in the execution of the work to interrupt existing

surface drainage, irrigation channels sewers or under drainage,

temporary arrangements shall be provided till such time as is

necessary. The contractor at his own cost shall make good the

interrupted drainage and sewer, etc. unless separately provided in the

tender. Any damage to the existing works or work in hand caused as a

result of his operations or negligence shall be made good by the

contractor at his own cost.

Roadside gutters shall be excavated to the specified sections and shall

be measured along with the main cutting in cubic meters.

Intercepting or catchwater gutters necessary shall be built to the cross-

section, shown on the plans in time to prevent damage to the cuts or

banks.

3.6 DEWATERING:

If water is met with in the excavation due to springs, seepage rain or

other causes it shall be removed by suitable diversions, pumping or

bailing out and the excavation kept dry whenever so required by the

Engineer. Care shall be taken to discharge the water so as not to cause

damage to the work, crops or any property or any inconvenience to the

property holders in the neighborhood. Unless separate provisions is

made in the tender fro dewatering the cost of dewatering shall be

covered by the rate for excavation.

3.7 SLIDES:

If slides occur in the cutting they shall be removed as ordered by the

Engineer. If finished slopes slide into the roadway before the final

acceptance of the work, such slides shall be removed by the contractor


213

and shall be paid for at the contract rate for the class of excavation

involved provided the slides are not due to any negligence of the

contactor. The classification of the materials in slides shall conform to

its condition at the time of removal and payment made accordingly

regardless or its prior condition.

Care shall be taken to see that excavation is arranged in a safe way so

that these will be no risk to the work or workmen by slides, falling

materials, boulders and collapsing sides etc.

3.8 PROTECTION:

If there is traffic nearby or if there are towns and villages in the

neighborhood, barricades and/or traffic signals shall be provided day

and night for the duration of the work in such a way as to prevent

accidents. Warning signals shall be displayed at 70m. from the danger

point on both sides to give sufficient warning. If necessary, signalers

shall be stationed at each end to regulate traffic where it is heavy.

Measures shall be taken to see that the excavation does not affect or

damage adjoining structures or property. If there is damage to

property, injury to workers, the members of the public animals etc. due

to the negligence of the contractor, he will be responsible and liable to

all the consequences including compensation.

3.9 DIVERSIONS:

If diversions are necessary for the traffic they shall be provided and

maintained as specified under specification of MORT&H clause 112.

3.10 DISPOSAL OF EXCAVATED MATERIALS:

All the excavated materials shall be the property of the CIDCO where

the excavated material is directed to be used in the construction of the

works for the general grading, plinth filling or embankments, the


214

operations shall be arranged in such a manner that the capacity for

cutting, haulage and compaction are nearly the same.

All hard materials such as hard murum, rubble etc. not intended for

filling in foundations, plinth or embankments, shall be stacked neatly

for future use as directed by the ENGINEER within the lead specified.

Unsuitable or surplus materials not intended for use in part of the works

or for reuse shall be disposed of as directed by the ENGINEER.

3.11 MAINTENANCE:

The excavated roadway shall be maintained satisfactorily and protected

by the contractor at his own cost against all damage till it is taken over

by the Department. If any damage occurs, the contractor shall be

responsible to repair it at his own cost.

3.12 ITEM TO INCLUDE:

1) Clearing Site

2) Setting out by total station including necessary labour, material

and fixing reference marks.

3) Diversion unless separately provided in the tender.

4) Dewatering unless separately provided in the tender

5) Protective measures for work, work people, public, animal,

property etc.

6) Excavation to the required lines, curves, section and grades.

7) Conveying the excavated materials including all lifts and lead

upto 50 m. (about 164’), spreading in layers or stacking as

directed and disposing off unwanted materials.

8) All labour, materials and use of equipment and tolls required for

completing the item satisfactorily.

9) Compensation on account of damages, accidents or use of

private lands royalty, etc.


215

3.13 MODE OF MEASUREMENT & PAYMENT:

The contract rate shall be for a unit of one cubic metre for the strata

mentioned in the wording of the items of excavation acceptably

completed, limited to the dimensions shown on the plans or as directed

by the Engineer. Excavation shall be measured in its original position by

the taking cross-sections before the work start and after it is entirely

completed. The quantity shall be worked out by the Average End Area

method. The individual dimensions and areas of the cutting shall be

measured correct upto two places of decimals of a metre and square

metre respectively and the quantity worked out correct up to two places

of decimals of a cubic metre.

When the classification of the strata changes, the contractor shall bring

this to the notice of the Engineer who will then verify and if necessary

take levels for the changed strata for purpose of measurement.

The engineer at his option may direct dead-men to be left at such

intervals as he may indicate for purpose of measuring the depths and

other dimensions either for initial measurements or for checking.

Deduction shall be made for these dead-men. These shall be removed

when no longer required and the deduction restored thereafter. If the

dead-men are not removed and used in the work or otherwise disposed

of as directed by the Engineer within 15 days of the date of check

measurement, the Engineer shall have the right to remove then at the

contractor’s cost. If for any reason the dead-men are damaged at the

time of measurement the measuring or check measuring officer shall

estimate the quantity of earthwork at his discretion and such estimate

shall be final.


216

4.0 EMBANKMENT CONSTRUCTION : (Sub-grade with 95% P.D.)

Providing earthwork in embankment with approved materials

obtained from the road cutting with all leads including all lifts, laying

in layers of 20 to 30 cms in thickness, breaking clods, dressing to the

required lines, curves, grades, and section with watering and

compacting to 95% of Modified Proctor density with vibratory power

rollers etc. Complete.

4.1 GENERAL :

The work shall include preliminaries of clearing site, setting out and

preparing the ground and thereafter forming embankment for the

road with approved materials obtained from Department land or other

sources, laying them in layers, watering and compacting to the

required density lines, curves, grades, cross section and dimensions

shown on the plan or as directed by the Engineer with due allowance

for shrinkage.

4.2 CLEARING SITE :

The ground over which embankment is to be formed shall be cleared

of all trees, brushwood, loose stones, vegetation, bushes, stumps and

all other objectionable materials, under this item. Roots of trees shall

be grubbed to a depth of at least 15 cm. below the original ground

surface and at least 30 cm. below the formation level whichever is

deeper. The holes dug up for grubbing roots etc. shall be filled with

excavated materials in layers of 15 cm. and compacted. Brushwood,

stumps, vegetation etc. shall be cut flush with the ground materials

obtained from clearing site shall be dealt with according to

specification No. Rd.2.2


217

4.3 SETTING OUT :

After the site is cleared, setting out shall be done as laid down in

Specification No. Rd.2.3. Profiles shall be set up with stout poles to

mark the centre and edges of the formation with the top levels of

formation clearly marked by paint or cut and the slopes with string and

pegs at every 80 metres on straight portion and 10 m. or less on

curves or as directed by the Engineer. Toe line may be marked with

pick marks. Longitudinal and cross section levels shall be taken

recorded and checked for measurements and signed by the contractor

or his representative.

All the materials and labour required for this item shall be supplied

and profiles, B.Ms. etc. put up by the contractor. These shall be

covered by the rate.

Profiles, pegs, bench marks and other marks shall be maintained

without any disturbance as long as they are required.

4.4 MATERIALS :

After utilising, for the embankment all the useful and acceptable

materials obtained from the road cutting within the specified leads the

contractor shall obtained additional materials from borrow in

Departmental Land or from other suitable sources. Satisfactory soil

murum or a mixture of soil, sand, murum, gravel, small boulders or

rubble shall normally be acceptable. Soils having dry density less than

1.6 gm./cc. shall not be used in embankments for 95% M.P.D. Soil

having laboratory dry density less than 1.75 gm./cc. shall not be used

in embankments for 98% M.P.D. Only the materials considered


218

suitable as above by the Engineer shall be used for the bank. Rejected

materials shall not be put into the bank nor brought to the work site.

Perishable materials such as stumps, pieces of wood, roots, rubbish,

etc. and such other materials as will effect the stability of the

embankment shall not be used. Soils with humus of grass will be

permitted to be used as surface covering for the bank slopes to a

thickness of not more than 30 cm.

The materials required for embankment shall be obtained in any of

the following ways provided the materials is suitable in the opinion of

the Engineer:-

a) From cuttings from nearby sections of the road as directed.

b) From excavation for improving sight distances in nearby curves

as directed.

c) By sectioning any adjacent Nallah or waterways as directed.

d) By excavating cuts to lead water way from the road.

e) By excavating side drains and catch-water drains.

f) From waste land outside the road land.

g) From humps above the general ground level within the road

land.

h) From land acquired temporarily if any, outside the road land

i) From borrow pits in Departmental land when permitted and

from non Departmental and private lands when necessary.

The contractor shall follow the priorities fixed by the Engineer for

obtaining the materials from different sources.

All lifts and leads involved in conveying the materials to site shall be

included in the rate except when the materials from road cutting or


219

other excavation being paid separately are to be conveyed for use in

banks with different leads.

If the materials are to be obtained from non-Departmental and private

lands, the contractor shall make his own arrangements and be

responsible for payment for rents, compensation, royalty etc. and shall

not be entitled for extra claims.

The Department shall remain indemnified regarding any claims that

may be made by private owners in this respect.

If all the useful materials available from the road cutting are not used

and materials obtained from other sources are used instead by the

contractor for his own convenience, such materials shall be deemed to

have been obtained from the road cutting to the extent to which useful

materials were available for bank and shall not be paid for under this

item.

4.5 EQUIPMENT S :

Pickaxes, crowbars, phawras and pans may be used for manual work.

Scrapers, dozers, graders, shovels, dumpers, trucks, trolleys etc. may

be used for mechanised work. Three wheel 8 tonne power roller or

sheepsfoot roller giving a pressure required to obtain the specified

density may be used for compaction. Bullock carts with tanks or

mechanically driven tankers may be used for watering.

4.6 CONSTRUCTION METHOD :

4.6.1 Diversion :

If diversions barricading and signals are found to be necessary, they

shall be provided as directed by Engineer-in-charge.


220

4.6.2 Preparing the ground for laying bank :

Before any material is laid for the bank the ground shall be cleared of

all rubbish etc. and the holes if any, filled up. When the embankment

is to be laid on hill sides or slopes, the existing slopes shall be

ploughed deeply. If the cross slopes are steeper than 1 in 3, steps with

reverse slope shall be cut into the slopes to give proper hold and

seating to the bank as directed by the Engineer. On surfaces flatter

than 1 in 15 no special surface treatment such as cutting steps shall be

necessary. The top 15 cm. of soil shall be scarified and watered if

directed and compacted to the same density as specified for the

embankment before any material is laid for the bank-work.

When the embankment is to be placed over an existing road or other

hard surface which is within 15 cm. of the finished formation, the road

or other hard surface shall be scarified to a minimum depth of 15 cm.

The rate for embankment includes all the operations for preparing the

bed for laying the bank.

4.6.3 Laying the bank :

Embankment material shall be placed in successive horizontal layers of

20 cm. to 30 cm. depth, extending to the full width of the

embankment including the slopes at the level of the particular layer

and 30 cm. more on both sides to allow compaction of the full

specified section. The extra loose stuff at the edges shall be trimmed

later after completion of the bank work without extra cost leaving the

correct section fully compacted.

Keeping the width of the bank initially less and widening it later by

dumping loose earth on the slopes shall not be permitted as the

additional width and slopes will remain loose and uncompacted.


221

Similar procedure to extend the embankment by dumping the material

longitudinally shall also not be allowed. When placing the bankwork

in 20 cm. to 30 cm. layers is not feasible as in water or over slopes too

steep to operate the construction equipment, the embankment may be

constructed in one layer to the minimum level at which equipment can

be operated and above such a level, the embankment shall be made

up in layers of specified thickness. When boulders, broken stones and

similar hard materials are mixed up with the embankment materials

care shall be taken to see that they are distributed uniformly into the

bank and that no hollows are left near them. No stone or hard

material shall project above the top of any layer. Each layer of

embankment shall be watered, levelled and compacted as specified

hereinafter, before the succeeding layer is placed. The surface of the

embankment shall, at all times during construction, be maintained at

such a cross fall as will shed water and prevent ponding. If bridges

and culverts on the road are not completed in advance of bankwork, a

length of 15 m. to 30 m. bank shall be left on each side of the

structure and these lengths shall be dealt with later for placing the

bank work.

4.6.4 Watering :

If the bank material contains less than the optimum moisture water

shall be added to the material in the borrow pits or alternatively in the

loose layers of the embankment to bring the moisture uniformly upto

requirement. If some moisture is likely to be evaporated in transit or in

the bank before compaction adequate water in excess shall be added

to allow for the loss. If the material contains more than the required

moisture, it shall be allowed to dry until the moisture is reduced to the

required extent. If due to wet weather etc., the moisture content of the

soil cannot be reduce to the appropriate amount by exposure, bank


222

work shall be suspended till suitable conditions prevail without

contractor's claiming any compensation.

Water to be used shall be free of from harmful elements which may

cause heavy efflorescence etc., and approved by the Engineer. The

contractor shall make his own arrangement for getting adequate

quantity of acceptable water.

4.6.5 Compaction :

When a loose layer is levelled manually of mechanically and

moistured or dried to a uniform moisture content suitable for

maximum compaction, it shall be compacted by power roller, sheeps

foot rollers or vibratory roller or heavy hauling or dozing equipment to

give the specified 95%/98% of the Modified Proctor density for

respective item specified under Schedule “A”. If on testing, the density

is found to be less then 95%/98% of the Modified Proctor density the

contractor shall do additional compaction necessary to get the

specified density after adding water if required. It the density can not

be improved on reasonable efforts, the work may be accepted as

substandard by the Engineer, if he thinks it not harmful for the

purpose, at a reduce rate. Where the specified density is imperative the

work shall be removed and redone by the contractor at his own cost to

give the specified density.

Where the material allowed to be used is excessively stony or sandy so

that it will not compact to the required density where such material is

otherwise acceptable for embankment construction the Engineer may

waive the tests for stony or sandy portions where the required test

results are contained. Each layer shall be compacted fully before the

next layer is laid.


223

Proper sequence of all component operation shall be maintained to

give individual progress. To all for subsequent settlement, the finished level or of the

embankment may be kept higher than the specified level by 1 cm. for

each metre of the height of the bank and this, if provided, will be paid

for.

The hauling equipment, animals, labour etc., shall be made to go over

the bank as far as possible, to get the initial compaction. Care shall be

taken for getting good compaction behind abutments returns and

wings walls, etc.

Bank-work in areas not accessible to rollers such as those adjoining

bridges, culverts and other work, shall be carried out independently of

the main embankment and shall be have the layers placed in 10 cm.

to 15 cm. (about 4" to 6") height and each layer shall be moistened

and thoroughly compacted with mechanical or manual tampers.

Embankment shall be brought up simultaneously in equal layers on

each side and compacted carefully to avoid unequal pressure etc.

4.7 PROTECTION :

Proper care shall be taken to ensure that the method of operation and

compaction of the bank-word does not cause damage or undue strain

to any structural element. Embankment over and around bridges or

culverts shall be of approved materials and carefully placed and

compacted. The contractor shall take all precautions necessary for the

protection of the bank-work by diversion of streams, local surface

drainage, rain water etc. likely to damage the bank. Any damage to

the bank-work due to no protection or inadequate protection shall be

made good by the contractor at his own cost. Conveyance of

materials shall not cause obstruction or nuisance to the nearby

property owners and traffic.


224

4.8 FINISHING :

The embankment shall be finished and dressed smooth and even in

conformity with the alignment, levels, cross- sections and dimensions

shown on the drawings with due allowance for shrinkage. On curves,

section shall be provided with super elevation and increased widths as

shown on the plans or directed by the Engineer. All damages caused

by rain, flood or any other reason shall be made good in the finishing

operations. The road land which shall be cleared of all debris and ugly

spots near camping areas etc. for which the contractor or his men

were responsible.

4.9 MAINTENANCE :

The contractor shall be responsible for maintaining the bank-work

satisfactorily at his own cost till finally accepted including making good

any damages.

4.10 TESTS :

1) Tests shall be made to determine the maximum density of the

material to be used by the Proctor method before starting the

work.

2) Density tests shall be carried out for the bankwork during the

progress of the work. One set of three core samples for every

3,000 sq.m. area of each layer of bankwork shall be taken and

tested. The average density shall not be less than 95%/98% of

the Modified Proctor density for respective item specified under

Schedule “A”.


225

4.11 ITEM TO INCLUDE :

1) Clearing site.

2) Setting out alignment including necessary labour and materials

and maintaining it as long as required.

3) Preparing the ground for laying the embankment.

4) Providing and maintaining diversions if necessary.

5) Obtaining the embankment materials including all lifts and leads

and laying the bank in layers, watering, compaction and tests

and Royalties, fees etc. if any.

6) Protecting and maintaining the bank.

7) Finishing the embankment.

8) All labour, materials, use of equipment, tools and plants

necessary for completing the work satisfactorily.

4.12 MODE OF MEASUREMENT AND PAYMENT :

The contract rate shall be per cu. metre of the finished bankwork.

Measurements shall normally be taken by levelling sections and

chaining distances between them.

The measurements of the sections shall be limited to the dimensions

shown on the drawings or those ordered by the Engineer in writing.

The dimensions shall be recorded correct upto two places of decimals

of a metre. The sectional areas shall be worked out correct upto two

places of decimals of a sq.metre. The quantity shall be worked out

correct upto two places of decimals of a cu.m. by the average end

area method.

If outside materials have been used in the portions of the bankwork

where materials from cutting were to be used the outside material shall


226

be deemed to have been obtained from the cutting as specified in

those item and paid for under those items only.

No deduction shall be made from the gross volume for R.A. Bills as

well as Final Bill.

5.0 Providing earthwork in embankment with approved materials obtained from contractor’s own source including all lifts and leads, laying in layers of 20 cm. to 30 cm. thickness, breaking clods, dressing to the required lines, curves, grades and section, watering and compacting to 97% Modified Proctor Density Complete.

5.1 GENERAL :

The work shall include preliminaries of clearing site, setting out and

preparing the ground and thereafter forming embankment for the

road with approved materials obtained from contractor’s own source,

laying in layers, watering and compacting to the required density and

lines, curves, grades, cross section and dimensions shown on the plan

or as directed by the Engineer with due allowance for shrinkage.

5.2 CLEARING SITE :

The ground over which embankment is to be formed shall be cleared

of all trees (unless cutting of trees of over 30 cm. girth is provided as a

separate item vide Rd.1), brushwood, loose stones, vegetation, bushes,

stumps and all other objectionable materials, under this item. Roots

of trees shall be grubbed to a depth of at least 15 cm. below the

original ground surface and at least 30 cm. below the formation level

whichever is deeper. The holes dug up for grubbing roots etc. shall be

filled with excavated materials in layers of 15 cm. and compacted.

Brushwood, stumps, vegetation etc. shall be cut flush with the ground

materials obtained from clearing site shall be dealt with according to

Clause No.5.2 of Particular Specifications.


227

5.3 SETTING OUT :

After the site is cleared, setting out shall be done as laid down in

Clause No. 5.3 of Particular Specification. Profiles shall be set up with

stout poles to mark the centre and edges of the formation with the top

levels of formation clearly marked by paint or cut and the slopes with

string and pegs at every 80 metres on straight portion and 10 m. or

less on curves or as directed by the Engineer. Toe line may be marked

with pick marks. Longitudinal and cross section levels shall be taken

recorded and checked for measurements and signed by the contractor

or his representative.

All the materials and labour required for this item shall be supplied

and profiles, B.Ms. etc. put up by the contractor. These shall be

covered by the rate.

Profiles, pegs, bench marks and other marks shall be maintained

without any disturbance as long as they are required.

5.4 MATERIALS :

After utilising, for the embankment all the useful and acceptable

materials obtained from the contractor’s own source within the

specified leads the contractor shall obtained additional materials from

Contractor’s own source. Satisfactory soil murum or a mixture of soil,

sand, murum, gravel, small boulders or rubble shall normally be

acceptable. Soils having laboratory dry density shall be specified in the

item description of Schedule “A” (Bill of quantities). Only the materials

considered suitable by the Engineer shall be used for the bank.

Rejected materials shall not be put into the bank nor brought to the

work site. Perishable materials such as stumps, pieces of wood, roots,

rubbish, etc. and such other materials as will effect the stability of the

embankment shall not be used. Soils with humus of grass will be


228

permitted to be used as surface covering for the bank slopes to a

thickness of not more than 30 cm. (about 12").

5.5 EQUIPMENT :

Pickaxes, crowbars, phawras and pans may be used for manual work.

Scrapers, dozers, graders, shovels, dumpers, trucks, trolleys etc. may

be used for mechanised work. 8-10 tonne vibratory roller giving a

pressure required to obtain the specified density may be used for

compaction. Mechanically driven tankers may be used for watering.

5.6 CONSTRUCTION METHOD :

5.6.1 Diversion :

If diversions barricading and signals are found to be necessary, they

shall be provided as detailed in specification No. BR. 1 of Standard

Specifications of Red Book.

5.6.2 Preparing the ground for laying bank :

Before any material is laid for the bank the ground shall be cleared of

all rubbish etc. and the holes if any, filled up. When the embankment

is to be laid on hill sides or slopes, the existing slopes shall be

ploughed deeply. If the cross slopes are steeper than 1 in 3, steps with

reverse slope shall be cut into the slopes to give proper hold and

seating to the bank as directed by the Engineer. On surfaces flatter

than 1 in 15 no special surface treatment such as cutting steps shall be

necessary. The top 15 cm. (about 6") of soil shall be scarified and

watered if directed and compacted to the same density as specified for

the embankment before any material is laid for the bank-work.

When the embankment is to be placed over an existing road or other

hard surface which is within 15 cm. (about 6") of the finished

formation, the road or other hard surface shall be scarified to a

minimum depth of 15 cm. (about 6").


229

The rate for embankment includes all the operations for preparing the

bed for laying the bank.

5.6.3 Laying the bank :

Embankment material shall be placed in successive horizontal layers

of 20 cm. to 30 cm. (about 8" to 12") depth, extending to the full

width of the embankment including the slopes at the level of the

particular layer and 30 cm. (about 12") more on both sides to allow

compaction of the full specified section. The extra loose stuff at the

edges shall be trimmed later after completion of the bank work without

extra cost leaving the correct section fully compacted.

Keeping the width of the bank initially less and widening it later by

dumping loose earth on the slopes shall not be permitted as the

additional width and slopes will remain loose and uncompacted.

Similar procedure to extend the embankment by dumping the material

longitudinally shall also not be allowed. When placing the bankwork

in 20 cm. to 30 cm. layers is not feasible as in water or over slopes too

steep to operate the construction equipment, the embankment may be

constructed in one layer to the minimum level at which equipment can

be operated and above such a level, the embankment shall be made

up in layers of specified thickness. When boulders, broken stones and

similar hard materials are mixed up with the embankment materials

care shall be taken to see that they are distributed uniformly into the

bank and that no hollows are left near them. No stone or hard

material shall project above the top of any layer. Each layer of

embankment shall be watered, levelled and compacted as specified

hereinafter, before the succeeding layer is placed. The surface of the

embankment shall, at all times during construction, be maintained at

such a cross fall as will shed water and prevent ponding. If bridges


230

and culverts on the road are not completed in advance of bankwork, a

length of 15 m. to 30 m. (about 50' to 100') bank shall be left on each

side of the structure and these lengths shall be dealt with later for

placing the bank work.

5.6.4 Watering:

If the bank material contains less than the optimum moisture water

shall be added to the material in the borrow pits or alternatively in the

loose layers of the embankment to bring the moisture uniformly upto

requirement. If some moisture is likely to be evaporated in transit or in

the bank before compaction adequate water in excess shall be added

to allow for the loss. If the material contains more than the required

moisture, it shall be allowed to dry until the moisture is reduced to the

required extent. If due to wet weather etc., the moisture content of the

soil cannot be reduce to the appropriate amount by exposure, bank

work shall be suspended till suitable conditions prevail without

contractor's claiming any compensation.

Water to be used shall be free of from harmful elements which may

cause heavy efflorescence etc., and approved by the Engineer. The

contractor shall make his own arrangement for getting adequate

quantity of acceptable water.

5.6.5 Compaction:

When a loose layer is levelled manually of mechanically and

moistured or dried to a uniform moisture content suitable for

maximum compaction, it shall be compacted by power roller, sheeps

foot rollers or vibratory roller or heavy haling or dozing equipment to

give the specified 97% of the Modified Proctor Density. If on testing,

the density is found to be less than 97% of the Modified Proctor Density

the contractor shall do additional compaction necessary to get the

specified density after adding water if required. The density can not be


231

improved on reasonable efforts, the work may be accepted as

substandard by the Engineer. If he thinks it not harmful for the

purpose, at a reduce rate. Where the specified density is imperative

the work shall be removed and redone by the contractor at his own

cost to give the specified density.

Where the material allowed to be used is excessively stony or sandy so

that it will not compact to the required density where such material is

otherwise acceptable for embankment construction the Engineer may

waive the tests for stony or sandy portions where the required test

results are contained. Each layer shall be compacted fully before the

next layer is laid.

Proper sequence of all component operation shall be maintained to

give individual progress.

To all for subsequent settlement, the finished level or of the

embankment may be kept higher than the specified level by 1 cm. for

each metre of the height of the bank and this, if provided, will be paid

for.

The hauling equipment, animals, labour etc., shall be made to go over

the bank as far as possible, to get the initial compaction. Care shall be

taken for getting good compaction behind abutments returns and

wings walls, etc.

Bank-work in areas not accessible to rollers such as those adjoining

bridges, culverts and other work, shall be carried out independently of

the main embankment and shall be have the layers placed in 10 cm.

to 15 cm. (about 4" to 6") height and each layer shall be moistened

and thoroughly compacted with mechanical or manual tampers.

Embankment shall be brought up simultaneously in equal layers on

each side and compacted carefully to avoid unequal pressure etc.


232

5.7 PROTECTION:

Proper care shall be taken to ensure that the method of operation and

compaction of the bank-word does not cause damage or undue strain

to any structural element. Embankment over and around bridges or

culverts shall be of approved materials and carefully placed and

compacted. The contractor shall take all precautions necessary for the

protection of the bank-work by diversion of streams, local surface

drainage, rain water etc. likely to damage the bank. Any damage to

the bank-work due to no protection or inadequate protection shall be

made good by the contractor at his own cost. Conveyance of materials

shall not cause obstruction or nuisance to the nearby property owners

and traffic.

5.8 FINISHING:

The embankment shall be finished and dressed smooth and even in

conformity with the alignment, levels, cross-sections and dimensions

shown on the drawings with due allowance for shrinkage. On curves,

section shall be provided with super elevation and increased widths as

shown on the plans or directed by the Engineer. All damages caused

by rain, flood or any other reason shall be made good in the finishing

operations. The road land which shall be cleared of all debris and ugly

spots near camping areas etc. for which the contractor or his men

were responsible.

5.9 MAINTENANCE:

The contractor shall be responsible for maintaining the bank-work

satisfactorily at his own cost till finally accepted including making good

any damages.

5.10 TESTS:

1) Tests shall be made to determine the maximum density of the

material to be used by the Proctor method before starting the

work.


233

2) Density tests shall be carried out for the bankwork during the

progress of the work. One set of three core samples for every

3,000 sq.m. area of each layer of bank work shall be taken and

tested. The average density shall not be less than 97% of the

Proctor density. A deviation of 80 kg./cu.m. for fine and 160

Kg./cu.m. for coarse grained soils shall be permitted in dry

density in individual sample if the average density reaches upto

97% Modified Proctor density for each set.


1) Clearing site.

2) Setting out alignment including necessary labour and materials

and maintaining it as long as required.

3) Preparing the ground for laying the embankment.

4) Providing and maintaining diversions if necessary unless provided

as a separate item in the tender.

5) Obtaining the embankment materials including all lifts and leads

and laying the bank in layers, watering, compaction and tests

and Royalties, fees, Quarry Permit etc. if any.

6) Protecting and maintaining the bank.

7) Finishing the embankment.

8) All labour, materials, use of equipment, tools and plants

necessary for completing the work satisfactorily.

5.12 MODE OF MEASUREMENT AND PAYMENT :

The contract rate shall be per cu. metre of the finished bank work.

Measurements shall normally be taken by levelling sections and

chaining distances between them.


234


shown on the drawings or those ordered by the Engineer in writing.


of a metre. The sectional areas shall be worked out correct upto two

places of decimals of a sq.metre. The quantity shall be worked out

correct upto two places of decimals of a cu.m. by the average end

area method.

The volume of bank thus calculated shall be reduced by 5 percent for

the purpose of payment when the measurements are taken for

running bills and by 1 percent in final measurements.

If outside materials have been used in the portions of the bankwork

where materials from cutting were to be used the outside material

shall be deemed to have been obtained from the cutting as specified

in those item and paid for under those items only.

The final quantity to be paid for under this item shall be the total

quantity of bankwork reduced by 1 percent less the quantity to be paid

for using materials from cutting.

The gross quantity of earthwork embankment payable under this item

shall be deducted from the total payable quantity of excavation.

6.0 GRANULAR SUB-BASE

6.1 SCOPE:

This work shall consist of laying and compaction well-graded material

on prepared subgrade in accordance with the requirements of these

specifications. The material shall be laid in one or more layers as sub-

base and upper sub-base (termed as sub-base hereinafter) as

necessary according to lines, grades and cross- sections shown on the

drawings or as directed by the Engineer.


235

6.2 MATERIALS:

6.2.1 The material to be used for the work shall be natural sand, murum,

gravel, crashed stone or combination thereof depending upon the

grading required. Materials like crushed slag, crushed concrete, brick

metal and kankar may be allowed only with the specific approval of the

Engineer. The material shall be free from organic or other deleterious

constituents and conform to one of the three grading given in Table-1.

While the in Table-1 are in respect of close-graded granular sub-base

materials. One each for maximum particle size of 75mm, 53mm and

26.5mm, the corresponding gradings for the coarse graded materials

for each of the three maximum particle sized are given at Table-2. The

grading to be adopted for a project shall be specified in the contract.

6.2.2 PHYSICAL REQUIREMENT:

The material shall have a 10 percent fines value of 50kN or more (for

sample in soaked condition) when tested in compliance with BS: 812

(Part-III). The water absorption value of the coarse aggregate shall be

determined as per IS: 2386 (Part-III); If this value is greater than 2

percent, the soundness test shall be carried out on the material

delivered to site as per IS: 383. For grading II & III materials, the CBR

shall be determined at the density and moisture content likely to be

developed in equilibrium conditions which shall be taken as being the

density relating to a uniform air voids content of 5 percent.

TABLE – 1

GRADING FOR CLOSE GRADED GRANULAR SUB-BASE MATERIALS

IS SIEVE DESIGNATION

PERCENT BY WEIGHT PASSING THE IS SIEVE

GRADING-I GRADING-II GRADING-III

75.0 MM 100 --- ---

53.0 MM 80 – 100 100 ---


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TABLE – 1

GRADING FOR CLOSE GRADED GRANULAR SUB-BASE MATERIALS

IS SIEVE DESIGNATION

PERCENT BY WEIGHT PASSING THE IS SIEVE

GRADING-I GRADING-II GRADING-III

26.5 MM 55 – 90 70 – 100 100

9.50 MM 35 – 65 50 – 80 65 – 95

4.75 MM 22 – 55 40 – 65 50 – 80

2.36 MM 20 – 40 30 – 50 40 – 65

0.425 MM 10 – 25 15 – 25 20 – 35

0.075 MM 3 – 10 3 – 10 3 – 10

CBR VALUE (Minimum)

30 25 20

NOTE:

The material passing 425 micron (0.425mm) sieve for all the three

gradings when tested according to IS:2720 (Part-5) shall have liquid

limit plasticity index not more than 25 and 6 percent respectively.

6.3 STRENGTH OF SUB-BASE:

It shall be ensured prior to actual execution that the material to be used

in the sub-base satisfies the requirements of CBR and other physical

requirements when compacted and finished.

When directed by the Engineer, this shall be verified by performing CBR

tests in the laboratory as required on specimens remoulded at field dry

density and moisture content and any other tests for the “quality” of

materials as may be necessary.

6.4 CONSTRUCTION OPERATIONS:

6.4.1 Preparation of subgrade:

Immediately prior to the laying of sub-base, the subgrade already

finished as to clause 301 or 305 of MORT & H Specification as

applicable shall be prepared by removing all vegetation and other

extraneous matter, lightly sprinkled with water if necessary and rolled

with two passes of 80 – 100 kN smooth wheeled roller.


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6.4.2 Spreading and Compacting: The sub base material of grading

specified in the contract shall be spread on the prepared sub – grade

with the help of a motor grader of adequate capacity, its blade having

hydraulic controls suitable for initial adjustment and maintain the

required slope and grade during the operation or other means as

approved by the Engineer.

When the sub-base material consists of combination of materials

mentioned in Clause 401.2.1 of MORT & H Specification (Fourth

Revision), mixing shall be done mechanically by the mix-in-place

method.

Manual mixing shall be permitted only where the width of laying not

adequate for mechanical operations as in small – sized jobs. The

equipment used for mix-in-place construction shall be rotavator or

similar approved equipment capable of mixing the material to the

desired degree. If so desired by the Engineer, trial runs with the

equipment shall be carried out to establish its suitability for the work.

Moisture content of the loose material shall be checked in accordance

with IS:2720 (Part-2) and suitably adjusted by sprinkling additional

water a truck mounted or trailer mounted water tank and suitable for

applying water uniformly and at controlled quantities to variable widths

of surface or other means approved by the Engineer so that, at the time

of compaction, it is from 1 Percent above to 2 percent below the

optimum moisture content corresponding to IS:2720 (Part-8). While

adding water, due allowance shall be made for evaporation losses.

After water has been added, the material shall be processed by

mechanical or other approved means like disk harrows, rotavators until

the layer is uniformly wet.


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Immediately, thereafter, rolling shall start. If the thickness or compacted

layer does not exceed 100mm, a smooth wheeled roller of 80 to 100

kN weight may be used. For a compacted single layer upto 225 mm

the compaction shall be done with the help of a vibratory roller of

minimum 80 to 100kN static weight with plain drum or pad foot drum

or heavy pneumatic tyred roller of minimum 200 to 300 kN weight

having a minimum tyre pressure of 0.7 MN/m2 or equivalent capacity

roller capable of achieving the required compaction. Rolling shall

commence at the lower edge and proceed towards the upper edge

longitudinally for portions having unidirectional cross fall and super-

elevation and shall commence at the edges and progress towards the

center for positions having cross fall on both sides.

Each pass or the roller shall uniformly overlap not less than one-third of

the track made in the preceding pass. During rolling, the grade and

crossfall (camber) shall be checked and any high spots or depressions,

which become apparent, corrected by removing or adding fresh

material. The speed of the roller shall not exceed 5 km.per hour.

Rolling shall be continued till the achieved is at least 98 percent of the

maximum dry density for the material determined as per IS:2720

(Part-8). The surface of any layer of material on completion of

compaction shall be well closed, free from movement under

compaction equipment and from compaction planes, ridges, cracks or

loose material. All loose, segregated or otherwise defective areas shall

be made good to the full thickness of layer and re-compacted.

6.5 SURFACE FINISH AND QUALITY CONTROL OF WORK:

The surface finish of construction shall conform to the requirements of

Clause 902 of MORT &H Specifications.

Control on the quality of materials and works shall be exercised by the

Engineer in accordance with Section 900.


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6.6 ARRANGEMENTS FOR TRAFFIC:

During the period of construction, arrangement of traffic shall be

maintained in accordance with Clause 112 of MORT & H

Specifications.

6.7 MEASUREMENT FOR PAYMENT:

Granular sub-base shall be measured as finished work in position in

cubic metres.

The protection of edges of granular sub-base extended over the full

formation as shown in the drawing shall be considered incidental to the

work of providing granular sub-base and as such no extra payment

shall be made for the same.

6.8 RATE:

The contact unit rate for granular sub-base shall be payment in full for

carrying out the required operations including full compensation for:

1) Making arrangements for traffic to Clause 112 of MORT & H

Specifications except for initial treatment to verges, shoulders

and construction or diversions:

2) Furnishing all materials to be incorporated in the work including

all royalties, fees, rents where necessary and all leads and lifts:

3) All labour, tools, equipment and incidentals to complete the work

to the specifications,

4) Carrying out the work in part widths of road where directed and

5) Carrying out the required tests for quality control.

7.0 WET MIX MACADAM SUB – BASE / BASE :

7.1 SCOPE :

This work shall consist of laying and compacting clean, crushed,

graded aggregate and granular material, premixed with water, to a


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dense mass on a prepared subgrade/sub-base/base or existing

pavement as the case may be in accordance with the requirements of

the specification. The material shall be laid in one or more layers as

necessary to lines, grades and cross sections shown on the approved

drawings or as directed by the Engineer.

The thickness of a single compacted Wet Mix Macadam layer shall be

less than 75 mm. When vibrating or other approved types of

compacting equipment are used, the compacted depth of a single layer

of the sub-case course may be increase to 200 mm upon approval of

the Engineer.

7.2 MATERIALS :

7.2.1 Physical requirement :

Coarse aggregate shall be crushed stone. If crushed gravel/shingle is

used not less than 90 percent by weight of the gravel/shingle pieces

retained on 4.75 mm sieve shall have at least two fractured faces. The

aggregates shall conform to the physical requirements set forth in the

following Table – 1.

TABLE – 1

PHYSICAL REQUIREMENTS OF COARSE AGGREGATES

FOR WET MIX MACADAM FOR BASE COURSES

SL. NO.

TEST TEST METHOD REQUIREMENTS

1. *Loss Angles Abrasion Value or

IS : 2386 (Part – IV) 40% Maximum

2. * Aggregate impact value

IS : 2386 (Part –IV) or IS : 5640

30% Maximum

3. Combined flakiness and Elongation indices (total)

IS : 2386 (Part – I) 30% Maximum**

* Aggregates may satisfy requirement of either of the two tests.


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** To determine this combined proportion, the flaky stone from a

representative sample should first be separated out. Flakiness index is

weight of flaky stone metal divided by weight of stone sample. Only the

elongated particles be separated out from the remaining (non-flaky)

stone metal. Elongation index is weight of elongated particles divided

by total non-flaky particles. The value of flakiness index and elongation

index so found are added up.

7.2.2 Grading requirements :

The aggregates shall conform to the grading given below:

TABLE – 2

GRADING REQUIRMENTS OF AGGREGATES FOR WET MIX MACADAM

SIEVE DESIGNATION PERCENT PASSING

53 mm 100

45 mm 95 -100

26.5 mm ---

22.4 mm 60 – 80

11.2 mm 40 – 60

4.75 mm 25 – 40

2.36 mm 15 -30

600 microns 8 -22

75 microns 0-8

Materials finer than 425 micron shall have Plasticity Index (PI) not

exceeding 6.

The final gradation approved within these limits shall be well graded

from coarse to fine and shall not vary from the low limit on one sieve to

the high limit on the adjacent sieve or vice versa.


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7.2.3 Construction operation:

7.2.3.1 Preparation of Base:

Clause 404.3.1 of MORT & H shall apply.

7.2.3.2 Provisional of lateral confinement of aggregates:

While constructing wet mix macadam, arrangement shall be made for

the lateral confinement of wet mix. This shall be done by laying

materials in adjoining shoulders along with that the wet mix macadam

layer and following the sequence of operations described in Clause

407.4.1 of MORT & H.

7.2.3.3 Preparation of mix :

Wet – mix macadam shall be prepared in an approved mixing plant of

suitable capacity having provision for controlled addition of water and

force/positive mixing arrangement like pugmill or pan type mixer of

concrete batching plant. For small quantity of wet mix work, the

Engineer may permit the mixing to be done in concrete mixers.

Optimum moisture for mixing shall be determined in accordance with

IS:2720 (Part -8) after replacing the aggregate fraction retained on

22.4 mm sieve with material of 4.75 mm to 22.4 size. While adding

water, due allowance should be made for evaporation losses. However,

at the time of compaction, water in the wet mix should not very from the

optimum value by more than agreed limits. The mixed material should

be uniformly wet and no segregation should be permitted.

7.2.3.4 Spreading of mix :

Immediately after mixing, the aggregates shall be spread uniformly and

evenly upon the prepared subgrade/sub-base/base in required

quantities. In no case should these be dumped in heaps directly on the

area where these are to be laid nor shall their hauling over a partly

completed stretch be permitted.


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The mix may be spread either by a motor grader or a paver finisher or

motor grader. For portions where mechanical means cannot be used,

manual means as approved by the Engineer shall be used. The motor

grade shall be capable of spreading the material uniformly all over the

surface. Its blade shall have hydraulic control suitable for initial

adjustments and maintaining the same so as to achieve the specified

slope and grade.

The paver finisher shall be self propelled having the following features:

i) Moving hoppers and suitable distribution mechanism

ii) The screed shall have tamping and vibrating arrangement for

initial compaction to the layer as it is spread without rutting or

otherwise marring the surface profile.

iii) The paver shall be equipped with necessary control mechanism

so as to ensure that the finished surface is free from surface

blemishes.

The surface of the aggregate shall be carefully checked with templates

and all high or low spots remedied by removing or adding aggregate

as may be required. The layer may be tested by depth blocks during

construction. No segregation of large and fine particles should be

allowed. The aggregates as spread should be of uniform gradation

with no pockets of fine/coarse materials.

7.2.3.5 Compaction :

After mix have been laid to the required thickness, grade and cross

fall/camber, the same shall be uniformly compacted to the full depth

with suitable roller. If the thickness of single compacted layer does not

exceed 100mm, a smooth wheel roller of 80 to 100 kN weight may be

used . For a compacted roller layer upto 200mm the compaction shall


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be done with the help of vibratory roller of minimum static weight of 80

to 100kN of equivalent capacity roller. The speed of the roller shall not

exceed 5 k.m./h.

In portions having unidirectional cross fall/super elevation, rolling shall

commence from the lower edge and progress gradually towards the

upper edge. Thereafter roller should progress parallel to the centre line

of the road, uniformly overlapping each preceding track by at least one

third width until the entire surface has been rolled. Alternate strips of

the roller shall be terminated in stops at least 1 m. away from any

preceding stop.

In portions in camber, rolling should begin at the edge with the roller

running forward and backward until the edges have been firmly

compacted. The roller shall then progress gradually towards the centre

parallel to the centre line of the road uniformly overlapping each of the

preceding tract by at least one third width until the entire surface has

been rolled.

Any displacement occurring as a result of reversing of the direction of

the roller or from any other cause shall be corrected at once as

specified and or removed the made good.

Along forms, kerbs, walls or other places not accessible to the roller,

the mixture shall be thoroughly compacted with mechanical tampers or

a plate compactor. Skin patching of an area without scarifying the

surface to permit proper bonding of the added material shall not be

permitted.

Rolling should not be done when the sub – grade is soft or yielding or

when it causes a wave – like motion in the sub-base/base course or sub

– grade. If irregularities develop during rolling which exceed 12 mm

when tested with a 3 metre straight edge, the surface should be loosed


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and premixed material added or removed as required before rolling

again so as to achieve a uniform surface conforming to the desired

grade and cross fall. In no case should the use of unmixed material be

permitted to make up the depressions.

Rolling should be continued till the density achieved is at least 98% of

the maximum dry density for the material as determined by the method

outlined in IS:2720 (Part 8).

After completion, the surface of any finished layer should be well

closed, free from movement under compaction equipment or any

compaction planes, ridges, cracks and loose material. All loose,

segregated or otherwise defective areas shall be made good to the full

thickness of the layer and re-compacted.

7.2.3.6 Setting and drying :

After final compaction of wet mix macadam course, the road shall be

allowed to dry for 24 hours.

7.2.4 Opening to traffic :

Preferably no vehicular traffic of any kind should be allowed on the

finished wet-mix macadam surface till it has dried and the wearing

course laid.

7.2.5 Surface Finish and Quality Control of work :

7.2.5.1 Surface evenness :

The surface finish of construction shall conform to the requirements of

Clause 902.

7.2.5.2. Quality control :

Control of the quality of materials and shall be exercised by the

Engineer in accordance with Section 900 of M.O.R.T. & H.


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7.2.6 Rectification of Surface irregularity :

Where the traffic irregularity of the wet mix macadam course exceeds

the permissible tolerance or where the course is otherwise defective due

to sub-grade soil getting mixed with the aggregates, the full thickness of

the layer shall be scarified over the affected area, re-shaped with

added premixed material or removed and replace with fresh premixed

material as applicable and re-compacted in accordance with Clause

406.3 The area treated in aforesaid manner shall not be less than 5 m.

long and 2 m. wide. In no case shall depressions be filled up with

unmixed and ungraded material or fines.

7.2.7 Arrangement for traffic :

During the period of construction, arrangement of traffic shall be done

as per Clause 112.

7.2.8 Measurement for payment :

Wet mix macadam shall be measure as finished work in position in

cubic metres.

7.2.9 Rates :

The contract unit rate for wet mix macadam shall be payment in full for

carrying out the required operations including compensation for all

components listed Clause 401.8 of MORT&H Specifications.

8.0 PRIME COAT OVER GRANULAR BASE :

8.1 SCOPE :

This work shall consist of application of a single coat of low viscosity

liquid bituminous material to a porous granular surface preparatory to

the superimposition of bituminous treatment or mix.


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8.2 MATERIALS :

8.2.1 Primer :

The choice of a bituminous primer shall depend upon the porosity

characteristics of the surface to be primed as classified in IRC : 16.

These are :

i) Surface of low porosity; such as cement stabilized soil base.

ii) Surface of medium porosity, such as cement stabilized soil

base.

iii) Surfaces of high porosity; such as a gravel base.

8.2.2 Primer viscosity :

The type and viscosity of the primer shall comply with the requirements

of IS 8887, as sampled and tested for bituminous primer in accordance

with theses standards. Guidance on viscosity and rate of spray is given

in Table – 1.

TABLE – 1

VISCOSITY REQUIREMENT AND QUANTITY OF LIQUID

BITUMINOUS PRIMER

Types of surface

Kinematic Viscosity of

Primer at 600 C

(Centistokes)

Quantity of Liquid

Bituminous Material per

10 Sq.m. (K.G.)

Low porosity 30 – 60 6 to 9

Medium porosity 70 – 140 9 to 12

High porosity 250 – 500 12 to 15


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8.2.3 Choice of primer :

The primer shall be bitumen emulsion, complying with IS 8887 of a

type and grade as specified in the contract or as directed by the

Engineer. The use of medium curing cutback as per IS 217 shall be

restricted only for sites at sub-zero temperatures or for emergency

applications as directed by the Engineer.

8.3 WEATHER AND SEASONAL LIMITATIONS :

Bituminous primer shall not be applied to a wet surface or during dust

storm or when the weather is foggy, rainy or windy or when the

temperature in the shade is less than 100 C. Surfaces which are to

receive emulsion primer should be damp, but no free or standing water

shall be present.

8.4 CONSTRUCTION :

8.4.1 Equipment :

The primer distribute shall be a self – propelled or towed bitumen

pressure sprayer equipped for spraying the material uniformly at

specified rates and temperatures. Hand spraying of small areas,

inaccessible to the distributor, or in narrow strips shall be sprayed with

a pressure hand sprayer, or as directed by the Engineer.

8.4.2 Preparation of road surface :

The surface to be primed shall be prepared in accordance with Clause

501.8 and 902 of MORT & H (Forth Revision) as appropriate.

Immediately prior to applying the primer the surface shall be carefully

swept clean of dust and loose particles, care being taken not to disturb

the interlocked aggregate. This is best achieved when the surface layer

is slightly moist (lightly sprayed with water and the surface allowed do

dry) and the surface should be kept moist until the primer is applied.


249

8.4.3 Application of bituminous primer :

The viscosity and rate of application of the primer shall be secified in

the contract, or as determined by site trials carried out as directed by

the Engineer. Where a geosynthetic is proposed for use, the

requirements of Clauses 703.3.2 & 703.4 of MORT&H specifications

shall apply. The bituminous primer shall be sprayed uniformly in

accordance with Clause 501 of MORT & H specifications. The method

of application of the primer will depend on the type of equipment to be

used, size of nozzles, pressure at the spray bar bars speed of forward

movement. The contractor shall demonstrate at a spraying trial, that the

equipment and method to be sued is capable of producing a uniform

spray, within the tolerances specified.

8.4.4 Curing of primer and opening to traffic :

A primed surface shall be allowed to cure for at least 24 hours or such

other period as is found to be necessary to allow all the volatile to

evaporate before any subsequent surface treatment of mix is laid. Any

unabsorbed prime shall first be blotted with an application of sand,

using the minimum quality possible. A primed surfaces shall not be

opened to traffic other than that necessary to lay the next course. A very

thin layer of clean san may be applied to the surface of the primer, to

prevent the primer picking up under the wheels of the paver and the

trucks delivering bituminous material to the paver.

8.4.5 Tack coat :

Over the primed surface, a tack coat should be applied in accordance

with Clause 503 of MORT & H (Fourth Revision).

8.5 QUALITY CONTROL OF WORK :

For control of the quality of materials supplied and the works carried

out, the relevant provisions of Section 900 of MORT & H (Fourth

Revision) shall apply.


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8.6 ARRANGEMENTS FOR TRAFFIC :

During construction operations arrangement for traffic shall be made in

accordance with the provisions of Clause 112 of MORT & H

Specifications.

8.7 MEASUREMENT OF PAYMENT :

Prime coat shall be measure in terms of surface area of application in

square metres.

8.8 RATE :

The contract unit rate for coat with adjustments as described in Clause

502.7 of MORT & H shall be payment in full for carrying out the

required operations including full compensation for all components

listed in Clause 401.8 (i) to (v) of MORT&H Specifications and as

applicable to the work specified in these specifications. Payment shall

be made on the basis of the provision of primer coat at an application

of rate 0.6 kg. to 0.9 kg. per square metre, with adjustment, plus or

minus, for the variation between this amount and the actual amount

approved by the Engineer after the preliminary trials referred to in

Clause No. 502.4.3 of MORT & H. Specification.

9.0 BITUMINOUS BOUND MACADAM (BBM)

Providing and laying Bitumen Bound Macadam surface in 75,

thickness including supplying all materials, spreading 40 mm metal

layers, heating and spraying bitumen at the rate 250 kg/100 sqm

and spreading 12 mm size key aggregate using 60-70 grade

bitumen and compaction with vibratory roller etc. complete.


251

9.1 General :

The work consists of supply of all materials and labour required for

providing and laying bituminous bound macadam surface for

compacted thickness of 75 mm This item include preparing the

existing road surface to receive the bituminous bound macadam

course, spreading of 40 mm size metal layers in required thickness

with compaction with vibratory roller, heating and spreading

bitumen with equipment plant etc. Spreading key aggregates 12mm

chips and final compaction with vibratory roller etc. complete. The

work shall be finished in accordance with the requirements of this

specification and in close conformity with grades, lines, cross

sections and thickness as per approved drawing or as directed by the

Engineer in charge.

9.2 MATERIALS :

9.2.1 Bitumen :

The bitumen shall be paving bitumen or suitable penetration grade

within the range S-35 to S-65 or A-35 to A-65 (30/40 to 60/70) as

per Indian Standard Specifications for “Paving bitumen” IS:73-1962.

The actual grade of bitumen be used shall be decided by the

Engineer, appropriate to the region traffic, rainfall and other

environmental conditions.

9.3 AGGREGATES :

The aggregates shall comprise of 40 mm size and broken stone

standard specification clause Rd. 22.3.2, Page 201 of edition 1979,

12 mm size crushed aggregate satisfying standard specifications

clause Rd.41.3.2 Page 216 of edition 1979 for respective size of


252

crush metal. The aggregate shall be free from disintegrated pieces,

organic or other deleterious set for in table 500/4 of Ministry of

Surface Transport’s specifications for Road and Bridges edition June

2001.

9.4 PROPORTIONING OF MATERIALS :

The quantities of aggregates and bitumen required for the work of

75 mm compacted bituminous bound macadam is detailed below :

a. 40mm size hand broken metal 9.00 cmt. Per 100 sq.mt.

b. 20mm size crushed metal 1.50 cmt. Per 100 sq.mt.

c. 12mm size key aggregate 1.80 cmt. Per 100 sq.mt.

d. Bitumen 250 kg. per 100 sq.mt.

9.5 PREPARATIONS OF BASE :

The road surface shall be swept clean of all dirt, dust and other

loose and foreign matter. The work shall be performed on such

widths and lengths as directed by Engineer-in-charge and may

required scarifying of existing layer, filling of pot holes etc. The edge

line may be marked with stakes (formed or murum or metal 25 cm

to 30 cm width)

Tack Coat:

Tack Coat our clean surface shall be applied with mechanical

sprayer.


253

9.6 SPREADING AND COMPACTION :

9.6.1 Spreading of 40 mm size metal :

40 mm Size hand broken metal shall be spread evenly at the rate of

9 cu.m. per 100 sq.m. of area so as to form layer for camber

correction over the width of road specified on plans. Any foreign

matter, organic matter, dust, grass etc. shall be removed

immediately. The sections shall be checked with camber board,

straight edge batten etc. Any irregularities shall be made good by

adding aggregates in case of depressions and removing aggregates

from high spots.

Compaction of 40 mm size metal :

The surface of 40mm metal layer after brought to necessary grades

shall be rolled with the use of 8 to 10 tons power roller. Rolling shall

be commence from the edges and progress towards the enter

longitudinally exception super elevated portion it shall progress from

the lower to upper edge parallel to the centre line of pavement.

When the roller has passed over the whole area as prepared once,

any high spots or depressions which become apparent shall be

corrected by removing or adding aggregates. The rolling shall then

continued till the entire surface has been rolled to desired

compaction such that there is no crushing of aggregates and all

roller marks have been eliminated. The each pass of roller shall

uniformly overlap not less than one third of the track made in the

preceding pass.


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9.6.2 Spreading of 20 mm size Metal:

20mm size crushed metal shall be evenly spread at the rate of 1.5

Cum. per 100 Sq.mt. of area over the 40 mm size hand broken

metal compacted.

9.6.3 Compaction after Spreading of 20 mm size metal:

The surface of 20 mm metal layer after brought to necessary grades

and sections shall be rolled with the use of vibratory roller. Rolling

shall commence from the edges and progress towards the centre

longitudinally except on super elevated portion it shall progress from

the lower to upper edge parallel to the centre line of pavement.

When the roller has passed over the whole area as prepared once,

any high spots of depression which become apparent shall be

corrected by removing or adding aggregates. The rolling shall then

continued till the entire surface has been rolled to desired

compaction such that there is no crushing of aggregates as all roller

marks have been eliminated. The each part of roller shall uniformly

overlap not less than one third of the track made in the preceding

pass.

9.6.4 Bitumen Application :

Bitumen to be used shall be got approved from Engineer in charge.

Bitumen of IS grade S-35 needs heating to a temperature range

between 177 degrees to 191 degrees. Bitumen other than grade IS

S-35 shall be heated to a temperature appropriate to that grade.

Bitumen shall be applied through a pressure sprayer uniformly at the

rate of 250 kg. Per 100 sq.mt. To ensure correct application of

bitumen being sprayed, known dimensioned area be checked for

use of bitumen and accordingly dosage may be increased or

decreased as the case may be.


255

9.6.5 Key Aggregates :

On completion of bitumen application, 12 mm size key aggregate

shall be spread immediately at a uniform rate of 1.8 cum per 100

sq.mt of area when entire surface is in hot condition. Brooms shall

be used to ensure even distribution of key aggregates.

9.6.6 Final Compaction :

Immediately after spreading of bituminous and spreading of

aggregates shall be spread immediately at a uniform rate of 1.8

cum per 100 sq.mtr. of area when entire surface is in not condition.

Brooms shall be used to ensure even distribution of key aggregates.

Immediately after spraying of bitumen and spraying of key

aggregates the surface shall be rolled with a power roller to obtain

full compaction and to force the blindage of key aggregates in to the

interstices of the course aggregate. The rolling shall continue till the

asphalted surface hardens and key aggregates stop moving under

power roller.

9.7 Surface finish and quality control :

The surface finish shall conform to requirements of Clause 902 of

specifications for Roads and Bridges by Ministry of Road Transport &

Highways. Quality control test and their frequencies shall be as per

table 900-3 of specifications for Road and Bridges by Ministry of

Road Transport & Highways.

9.8 Arrangement of Traffic :

During the period of execution, arrangement of traffic shall be

carried out according to the Clause 112 of specification for Roads

and Bridges by Ministry of Road Transport and Highways.

9.9 Item to Include :


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1) Labour and materials required for preparing surface.

2) Supplying and spreading and compaction of 40mm hand

broken size metal and 20mm crushed metal.

3) Supplying, heating and spraying of bitumen.

4) Supplying and spreading and compaction of 12 mm crushed

metal.

9.10 Mode of Measurement for Payment :

The Contract unit rate for finished work of bituminous bound

macadam is in full for carrying out all operations. The finished work

shall be measured in Sqm.

10.0 TACK COAT

10.1 SCOPE

This work shall consist of application of a single coat of low viscosity

liquid bituminous material to an existing road surface preparatory to

the superimposition of a bituminous mix, when specified in the contract

or instructed by the Engineer.

10.2 MATERIALS

10.2.1 Binder

The binder used for tack coat shall be bitumen emulsion complying with

IS 8887 of a type and grade as specified in the contract or as directed

by the Engineer. The use of cutback bitumen as per IS 217 shall be

restricted only for sites at sub-zero temperatures or for emergency

applications as directed by the Engineer.

10.3 WEATHER AND SEASONAL LIMITATIONS

Bituminous material shall not be applied to a wet surface or during a

dust storm or when the weather is foggy, rainy or windy or when the

temperature in the shade is less than 100C. Where the tack coat


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consists of emulsion, the surface shall be slightly damp, but not wet.

Where the tack coat is of cutback bitumen, the surface shall be dry.

10.4 CONSTRUCTION:

10.4.1 Equipment:

The tack coat distributor shall be a self propelled or towed bitumen

pressure sprayer with flow meter arrangement, equipped for spraying

the material uniformly at a specified rate. Hand spraying of small

areas, inaccessible to the distributor, or in narrow strips, shall be

sprayed with a pressure hand sprayer, or as directed by the Engineer.

10.4.2 Preparation of base:

The surface on which the tack coat is to be applied shall be clean and

free from dust, dirt and any extraneous material, and be otherwise

prepared in accordance with the requirements of Clause-501.8 and

902 of MORT&H specifications (Fourth Revision) as appropriate.

Immediately before the application of the tack coat, the surface shall be

swept clean with a mechanical broom, and high pressure air jet, or by

other means as directed by the Engineer.

10.4.3 Application of Tack Coat :

The application of tack coat shall be at the rate as specified in the

Schedule, and shall be applied uniformly. The normal range of

spraying temperature for a bituminous emulsion shall be 200C to 700C

and for cutback 500C to 800C if RC-70/ MC-70 grade is used. Where a

geosynthetic is proposed for use, the provisions of Clauses 703.3.2 and

703.4.4 of MORT&H specifications shall apply. The method of

application of the tack coat will depend on the type of equipment to be

used, size of nozzles, pressure at the spray bar, and speed of forward

movement. The contractor shall demonstrate at a spraying trial, that the

equipment and method to be used is capable of producing a uniform

spray, within the tolerances specified. The bitumen sprayer shall have a


258

flow meter arrangement (duly calibrated) for measurement/rate of

spraying and reconciliation of material.

Where the material to receive an overlay is a freshly laid bituminous

layer, that has not been subjected to traffic, or contaminated by dust, a

tack coat is not mandatory where the overlay is completed within two

days.

10.4.4 Curing of tack coat:

The tack coat shall be left to cure until all the volatiles have evaporated

before any subsequent construction is started. No plant or vehicles shall

be allowed on the tack coat other than those essential for the

construction.

10.5 QUALITY CONTROL OF WORK

For control of the quality of materials supplied and the works carried

out, the relevant provisions of Section 900 of MORT&H specifications

(Fourth Revisions) shall apply.

10.6 ARRANGEMENT FOR TRAFFIC:

During the period of construction, the arrangement for traffic shall be

made in accordance with the provisions of Clause 112 of MORT&H

specifications (Fourth Revision).

10.7 MEASUREMENT FOR PAYMENT:

Tack coat shall be measured in terms of surface area of application in

square metres.

10.8 RATE:

The contract unit rate for tack coat shall be payment in full for carrying

out the required operations including for all components listed in


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Clause 401.8 (i) to (v) of MORT&H specifications (Fourth Revision) and

as applicable to the work specified in these specifications. The rate shall

cover the provision of tack coat as per Schedule “A”.

11.0 SEAL COAT

11.1 Scope

11.1.1 This work shall consist of application of a seal coat for sealing the

voids in a bituminous surface laid to the specified levels, grade and

cross fall (camber).

11.1.2 Seal coat shall be of either of the two types as specified below.

(A) Liquid seal coat comprising of an application of a layer of

bituminous binder followed by a cover of stone chip.

(B) Premixed seal coat comprising of a thin application of fine

aggregate premixed with bituminous binder.

11.2 Materials

11.2.1 Binder :

The requirements of Clauses 511.1.2.1 & 511.2.2.1 of MORT&H

Specifications shall apply.

The quantity of bitumen per 10 sqm., shall be 22 kg. for Type A seal

coat.

11.2.2 Stone chips for Type A seal coat :

The stone chips shall consist of angular fragments of clean, hard,

tough and durable rock of uniform quality throughout. They should

be free soft or disintegrated stone, organic or other deleterious

matter. Stone chips shall be of 6.7 mm size defined as 100 percent

passing through 11.2 mm sieve and retained on 2.36 mm sieve. The

quantity used for spreading shall be 0.09 cubic metre per 10 square


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metres area. The chippings shall satisfy the quality requirements in

Table 500-3 of MORT&H specification except that the upper limit for

water absorption value shall be 1 percent.

11.2.3 Aggregates for type B seal coat :

The aggregates shall be sand or grit and shall consist of clean, hard,

durable, uncoated dry particles and shall be free from dust, soft or

flaky/elongated material, organic matter or other deleterious

substances. The aggregate shall pass 2.36 mm sieve and be

retained on 180 micron sieve. The quantity used for premixing shall

be 0.06 cubic metre per 10 square metre area.

11.3 Construction Operations

11.3.1 Weather and seasonal limitations :

The requirements of Clause 501.5.1 of MORT&H specifications shall

apply.

11.3.2 Preparation of base :

The seal coat shall be applied immediately after the laying of

bituminous course which is required to be sealed. Before application

of seal coat materials, the surface shall be cleaned free of any dust

or other extraneous matter.

11.3.3 Construction of type A seal coat :

The bitumen shall be heated to 1500C - 1630C and sprayed at the

rate specified on the dry surface in a uniform manner with a self

propelled mechanical sprayer as described in the Manual for

Construction and Supervision of Bituminous works.

Immediately after the application of binder, stone chips, which shall

be clean and dry, shall be spread uniformly at the rate specified on

the surface preferably by means of a self propelled or towed


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mechanical frit spreader so as to cover the surface completely. If

necessary, the surface shall be brushed to ensure uniform spread of

chips.

Immediately after the application of the cover material, the entire

surface shall be rolled with a 8-10 tonne smooth wheeled steel

roller, 8-10 tonne static weight vibratory roller, or other equipment

approved by the Engineer after laying trials if required. Rolling shall

commence at the edges and progress towards the center except in

super-elevated and uni-directional cambered portions where it shall

proceed from the lower edge to the higher edge. Each pass of the

roller shall uniformly overlap not less than one-third of the track

made in the preceding pass. While rolling is in progress, additional

chips shall be spread by hand in necessary quantities required to

make up irregularities. Rolling shall continue until all aggregate

particles are firmly embedded in the binder and present a uniform

closed surface.

11.3.4 Construction of type B seal coat :

Mixer of appropriate capacity and type approved by the Engineer

shall be used for preparation of mixed material. The plant shall have

separate dryer arrangements for heating aggregate.

The binder shall be heated in boilers of suitable design, approved by

the Engineer to the temperature appropriate to the grade of bitumen

or as directed by the Engineer. The aggregates shall be dry and

suitably heated to a termperature between 1500C and 1600C or as

directed by the Engineer before these components are placed in the

mixer. Mixing of binder with aggregates to the specified proportions

shall be continued until the latter are thoroughly coated with the

former.


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The mix shall be immediately transported from the mixing plant to

the point of use and spread uniformly on the bituminous surface to

be sealed.

As soon as a sufficient length has been covered with the premixed

material, the surface shall be rolled with an 8-10 tonne smooth

wheeled roller. Rolling shall be continued until the premixed material

completely seals the voids in the bituminous course and a smooth

uniform surface is obtained.

11.4 Opening to Traffic

In the case of type B seal coat, traffic may be allowed soon after

final rolling when the premixed material has cooled down to the

surrounding temperature. In the case of Type A seal coat, traffic shall

not be permitted to run on any newly sealed area until the following

day. In the special circumstances, however, the Engineer may open

the road to traffic immediately after rolling, but in such cases traffic

speed shall be rigorously limited to 16km. per hour until the

following day.

11.5 Surface Finish and Quality Control of work

The surface finish of construction shall conform to the requirements

of Clause 902 of MORT&H specifications.

For control on the quality of materials supplied and the works carried

out, the relevant provisions of Section 900 of MORT&H Specifications

shall apply.


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11.6 Arrangement for Traffic :

During the period of construction, arrangements for traffic shall be in

accordance with the provisions of Clause 112 of MORT&H

Specifications.

11.7 Measurements for Payment

Seal Coat, Type A or B shall be measured as finished work, over the

area specified to be covered, in square meters at the thickness

specified in the Contract.

11.8 Rate :

The contract unit rate for seal coat Type A or B shall be payment in

full for carrying out the required operations including full

compensation for all components listed in Clause 501.8.8.2 (i) to (xi)

of MORT&H Specifications.

12.0 Providing Lowering, Laying and Jointing spigot socketed RCC pipe of

NP-2 class of various diameter etc. complete.

12.1 GENERAL :

The item provides for the supply and fixing of the spun concrete

pipes of the specified class and diameter in position for the Cross

Drainage works including necessary collars, conveyance and fixing

in cement mortar 1:2/ Socket Spigot pipes.

12.2 MATERIALS:

Concrete pipes shall be of the class and diameter mentioned in the

item and shall comply with I.S. 458-1971.


264

The collars shall be of appropriate size for fixing of the concrete

pipes specified on the drawings and shall comply with the I.S. 458-

1971.

The cement mortar shall comply with the specification No. B.5 (a),

proportion of cement to sand being 1:2.

12.3 Laying:

The excavation shall be confirming to Bd. V.1.3 of Red Book. The

pipes shall be laid to lines, levels & slopes indicated on the drawings

or as ordered by the Engineer. The handling, laying and jointing of

the concrete pipes shall confirm to IS: 783-1985.

The refilling shall be done as per Bd.V.1.5. of Red Book.

12.4 Testing :

Testing shall be as per IS: 458-1988

12.5 FIXING :

The handling and laying of the concrete pipes shall comply with I.S.

783-1985 code of practice of laying concrete pipes.

The pipes shall be laid to the lines and levels shown on the drawings

and the slope shall be 1 in 100 towards the down stream unless

other slopes are specified on the drawing or as ordered by the

Engineer.

The ends of the pipes shall be flush with face of masonry or bell

mouthed if so indicated on the drawings or ordered by the Engineer.

Pipe of non-standard length may be used when standard length

pipes do not fit in between the face of walls. Otherwise extra length


265

of standards pipes may be left projecting beyond face of masonry on

the downstream. Such extra length will not be paid for.

Diversions of the road if found necessary, shall be provided

according to BR.1 at the cost of the contractor unless separately

provided in the tender.

The collar/Socket Spigot type joints be cured satisfactorily. Till then

the filling around shall not be done.


1) Supply, conveyance and fixing of the spun concrete pipes

including collars/Socket Spigot type, fixing in cement mortar

1:2 to the line, levels and slope/rubber gasket ring.

2) All labour materials, use of equipment and tools for

completing the item satisfactorily.

12.7 MODE OF MEASUREMENT & PAYMENT :

The measurement shall be for the length of pipes provided and fixed

with collar/Socket Spigot from the outside of one face walls to the

outside of the other face wall, limiting the length to that specified in

the plan, or ordered by the Engineer.

The length shall be measured correct up to a centimeter. The rate

shall be inclusive of all the projecting lengths, if any projections

being ignored in the measurement.


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13.0 PRECAST FACTORY MADE CONCRETE KERB STONES:

Providing PCC precast factory made kerb stone of 500x400x150 mm

size in M-25 grade of concrete using design mix with minimum cement

content as per IS 456.

Note:

PCC Factory made Kerb Stone, RCC Factory made Parabolic Kerb

Stone, Pre Cast RCC Beam, Pre Cast RCC Slab to be procured from

manufacturing agency approved by CIDCO or Agency has to be got

approval of the product from the competent authority.

13.1 MANUFACTURE:

Pre-cast factory made PCC in M-25 grade concrete and of specified

dimensions shall be manufactured in accordance with IS 5758-1970

and generally in accordance with specifications of concrete works as

specified.

13.2 SIZES :

The sizes of kerb stones be as per detailed under Schedule “A”. The

concrete shall consist of grade M-25 laid to the dimensions, lines and

levels shown in the drawing and well compacted by ramming or other

means. The kerb stone then the embedded into cement concrete of

grade M-25 to a minimum thickness of 100 mm all around including

filling in joints with C.M. 1:3 and finishing with neat cement slurry etc.

complete as specified or as directed by the Engineer. After the line and

levels have been checked to be within the specified tolerance the

haunching will be placed taking care that the line and level of the kerbs

is not displaced during the process. All straight kerbs, circular kerbs,

quadrants or other kerbs shall be laid within a vertical or horizontal

tolerances of 3mm from the true line or level.


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13.3 General :

The specifications pertains to cement concrete of the specified

proportion to be laid in raft of strip foundations, thin bedding below

RCC foundations, bedding below paved floors, etc.

13.4 Preparation of Foundation for laying concrete :

Passing foundation :

The foundation shall be passed in writing by the Engineer before

concreting started. The bed of the foundation trenches shall be cleaned

of loose materials and well wetted, if dry to prevent absorption of water

from the green concrete.

In the case of paved floors plinth filling and rubble soling, if any shall

have been well compacted and brought to the required levels etc. and

passed by the Engineer before concrete is allowed to be laid.

13.5 Dewatering:

If the area on which the concrete is to be placed is under water, water

shall be removed as specified for Bd. A.9 of Red Book. Unless

dewatering is separately provided for in the tender, the rate for concrete

shall include the cost of dewatering also.

13.6 Concreting:

The cement concrete shall comply with specification No. B.6 of Red

book for ordinary cement concrete subject to the following:

13.6.1 Proportion:

Proportion of material shall be as mentioned in the wording of the item.

13.6.2 Coarse aggregates :

Coarse aggregates shall be broken from sound stones of the type

mentioned in the item and of approved quality. Maximum size of

aggregate shall not exceed 20 mm.


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13.6.3 Forms:

If the trenches are dug exactly to the dimensions of footings, no forms

will be necessary. But the sides and bottom of the trenches shall be

moistened to the extent necessary to prevent absorption of water from

the concrete.

If, however, footings are dug to dimensions larger than those shown on

the drawings or as directed by the Engineer, forms complying with

specifications No.B.6.5 (b) of Red book shall be used at the contractor's

cost. The side forms shall be removed 48 hours after placement of

concrete.

13.6.4 Mixing :

The concrete shall be mixed in mechanical mixers as specified in B.6.4

of Red Book.

13.6.5 Compaction :

Compaction shall be done with mechanical vibrators. In case of

concrete bedding below paved floors, a screed board shall be used to

get a level or sloped surface as required for the top of the bedding. All

laitance and loose aggregate, if any shall be removed and top surface

left slightly rough to improve bond with the topping.

13.6.6 Tests:

If the Engineer so directs, 6 cubes of 15 cm. Size shall be cast on the

first day tested for compression at 7 and 28 days. Later on, if the

Engineer so directs, 3 cubes shall be tested for every 60 cubic meters of

the concrete cast. No tests need be made for 1:5:10 cement concrete. If

there is doubt the strength of 1:3:8 and 1:4:8 concrete/ tests may be

carried out and their cost borne by the Department if the results are

satisfactory and by the contractor if they are unsatisfactory.


269

13.7 Mode of Measurement and Payment:

The contract rate shall be for a unit of one cubic meter of concrete. The

concrete shall be measured foe its strengih, breadth and depth, limiting

dimensions to those specified on the plans or as ordered by the

Engineer. No deductions shall be made for reinforcement in concrete in

RCC work. Individual dimensions shall be measured correct to two

decimals and quantities shall be worked out correct upto two places of

decimals of a cubic meter.

13.8 MEASUREMENT FOR PAYMENT :

Measurement shall be in linear meter up to 0.01 mt. of specified size of

kerb stone provided.

13.9 RATE:

The unit rate shall include all materials, labour, tools & plants etc.

including transportation to site, unloading, excavation, laying,

curing, oil painting, disposal off unsuitable material etc. all required

to complete the job as per drawing.

14.0 PRECAST PARABOLIC KERB STONE

14.0(i) Providing & fixing parabolic shape RCC precast-factory made M25

Grade kerb stone using design mix with minimum cement content as

per IS: 456. (As per IS 456 of size 500/200/850 mm as per detailed

design and drawing including excavation, fixing in PCC of M-15grade

bed 100 mm thick)

Note:

PCC Factory made Kerb Stone, RCC Factory made Parabolic Kerb

Stone, Pre Cast RCC Beam, Pre Cast RCC Slab to be procured from

manufacturing agency approved by CIDCO or Agency has to be got

approval of the product from the competent authority.


270

14.1 General :

The specifications pertains to cement concrete of the specified

proportion to be laid in raft of strip foundations, thin bedding below

RCC foundations, bedding below paved floors, etc.

14.2 Preparation of Foundation for laying concrete :

Passing foundation :

The foundation shall be passed in writing by the Engineer before

concreting started. The bed of the foundation trenches shall be cleaned

of loose materials and well wetted, if dry to prevent absorption of water

from the green concrete.

In the case of paved floors plinth filling and rubble soling, if any shall

have been well compacted and brought to the required levels etc. and

passed by the Engineer before concrete is allowed to be laid.

14.3 Dewatering:

If the area on which the concrete is to be placed is under water, water

shall be removed as specified for Bd. A.9 of Red Book. Unless

dewatering is separately provided for in the tender, the rate for concrete

shall include the cost of dewatering also.

14.4 Concreting:

The cement concrete shall comply with specification No. B.6 of Red

book for ordinary cement concrete subject to the following:

14.4.1 Proportion:

Proportion of material shall be as mentioned in the wording of the item.

14.4.2 Coarse aggregates :

Coarse aggregates shall be broken from sound stones of the type

mentioned in the item and of approved quality. Maximum size of

aggregate shall not exceed 20 mm.


271

14.4.3 Forms:

If the trenches are dug exactly to the dimensions of footings, no forms

will be necessary. But the sides and bottom of the trenches shall be

moistened to the extent necessary to prevent absorption of water from

the concrete.

If, however, footings are dug to dimensions larger than those shown on

the drawings or as directed by the Engineer, forms complying with

specifications No.B.6.5 (b) of Red book shall be used at the contractor's

cost. The side forms shall be removed 48 hours after placement of

concrete.

14.4.4 Mixing :

The concrete shall be mixed in mechanical mixers as specified in B.6.4

of Red Book.

14.4.5 Compaction :

Compaction shall be done with mechanical vibrators. In case of

concrete bedding below paved floors, a screed board shall be used to

get a level or sloped surface as required for the top of the bedding. All

laitance and loose aggregate, if any shall be removed and top surface

left slightly rough to improve bond with the topping.

14.4.6 Tests:

If the Engineer so directs, 6 cubes of 15 cm. Size shall be cast on the

first day tested for compression at 7 and 28 days. Later on, if the

Engineer so directs, 3 cubes shall be tested for every 60 cubic meters of

the concrete cast. No tests need be made for 1:5:10 cement concrete. If

there is doubt the strength of 1:3:8 and 1:4:8 concrete/ tests may be

carried out and their cost borne by the Department if the results are

satisfactory and by the contractor if they are unsatisfactory.


272

14.5 Interval for Starting Masonry :

Masonry, RCC pipes will be allowed to be placed on the concrete 48

hours after completion of concrete. Side filling between the concrete

and sides of excavation shall also be allowed after 48 hours after

placement of concrete. But the material adjoining the concrete shall be

kept wet for the duration of the curing period.

Paving of RCC work over concrete bedding shall be allowed after the

concrete is sufficiently set.

14.6 Item to include :

1) All labour, materials, use of equipment, tools and plant,

installing and removal of scaffolding, false work and forms and

bracing necessary for the satisfactory completion of the item

except reinforcement steel.

2) Providing cement concrete of specified proportion including

transporting, placing and compacting, curing, finishing to the

dimensions and shape shown on the plans to as ordered by the

Engineer.

3) Necessary sampling and tests for materials and concrete.

4) Compensation for injury to person and damages to work or

property.

14.7 Mode of Measurement and Payment:

The contract rate shall be for a unit of one cubic meter of concrete. The

concrete shall be measured foe its strength, breadth and depth, limiting

dimensions to those specified on the plans or as ordered by the

Engineer. No deductions shall be made for reinforcement in concrete in

RCC work. Individual dimensions shall be measured correct to two

decimals and quantities shall be worked out correct upto two places of

decimals of a cubic meter.


273

15.0 Providing and constructing B.B. Masonry chamber of 1.2 x 1.2 M.

internal size and depth up to 1.2m. with precast R.C.C. slab cover

with 15 cm. thick 1:3:6 proportion P.C.C. bedding, including

excavation, B.B. Masonry in C.M. 1:5 proportion precast R.C.C

frame and cover etc. complete.

15.1 This item includes all materials and labour mentioned hereafter,

bricks, RCC Cover, excavation, laying cement concrete, B.B.

masonry, plastering and refilling. The precast cover shall be tested

and the results for approved before fixing the same.

15.2 Brick Masonry:

Burnt brick shall be the best available locally and kiln burnt, the

minimum compressive strength shall be 60 kg/cm2. Bricks shall be

tested as per relevant IS for every 50,000 Nos. The sizes and

physical requirements of bricks shall be as per standard

specifications of B & C Department, Govt. of Maharashtra and

conforming to IS: 1877.

15.3 Joints of brick work shall be properly raked out cleaned and washed

before plastering. Top of walls having P.C.C. (1:3:6) for fixing

R.C.C. cover shall be finished with C.M. 1:5 15 mm thick. The item

shall be carried out as directed by Engineer.

15.4 ITEM TO INCLUDE:

1) Excavating, concreting foundation, constructing brick masonry,

laying 1:3:6 concrete forming channels or laying half round

slat glazed stoneware pipes, plastering the inside faces, fixing

cast iron frames and lid in concrete.

2) All necessary labours, materials and use of tools.


274

15.5 MODE OF MEASUREMENT & PAYMENT:

The contract rate shall be for one inspection chamber of the

specified size constructed as detailed above. The measurement shall

be for the number of such chambers constructed.

16.0 Conducting lab CBR test as per IS2720 (Part-16) 1987 The item shall

includes necessary cost for sample collection and transporting it to soil

testing lab. The rate includes for testing of minimum 3 specimen. If the

test results of initial 3 specimen deviate more than that specified in Table 2

of clause No. 3, 4, 6, 4 of IRC 37 (2000) then additional 3 specimen shall

be got tested at no extra cost. The rate includes for all necessary ancillary

tests mentioned in appendix “A” of IS 2720 (Part-16) viz. Proctor density

test, swell pressure test etc. The appropriate surcharge Wt. shall be

provided while testing the specimen. The item shall include all cost of

necessary excavation at site. The test results shall be submitted in report

form with observation sheet graph, tabular form and inference it any.

The work shall be carried out as per description in Schedule “A” (Bill of

quantities) and/or as directed by Engineer.


Date : Date :


275

PARTICULAR SPECIFICATIONS STORM WATER DRAIN

1.0 GENERAL :

The particular specifications are to be read in conjunction with

specifications contained in the description of items of Schedule ‘A’,

Specifications contained in Standard Specifications’ published by the

Public Works & Housing Department of Government of

Maharashtra, relevant Indian Standard Specifications and drawings.

Generally, specifications given in the particular specifications have

precedence over any other specifications (except Schedule ‘A’

description). In case of ambiguities or conflicting specifications in

various documents mentioned in the tender, where particular

specifications do not cover trade items included in the contract, the

specifications given in ‘Standard Specifications’ or relevant I.S.

specifications shall apply.

2.0 EXCAVATION SOIL, MURUM ETC. :

Excavation for foundation, drains etc. shall be excavated to exact

width, length and depth shown on drawings, extra width for working

space if any will be at the contractor’s cost. Extra depth if any shall

be brought up by (1:3:6) cement concrete filling and width filled in

by earth thoroughly rammed or as otherwise as directed by Engineer

without any extra cost. Excavated material shall be used to fill in

trenches or it shall be spread elsewhere on or near the site of work

including watering, ramming and consolidating or removal from site

free of charge as may be ordered. Contractor shall make provision

for temporarily supporting utility facilities service, trenches,

separating and stacking serviceable material neatly, shoring,


276

pumping, bailing out drainage water whether subsoil or rain water.

General excavation will include all strata except rock.

2.1 Excavation in hard rock :

Anything that does not come out with shovels and pickaxes but

required blasting, chiseling or wedging for removal shall be treated

as rock. Boulders have 0.5 cu.m. will be treated as rock. Rubble

shall be stacked properly in heaps.

2.1.1 Contractor shall obtain license from District authorities for carrying

out blasting work as well as for obtaining, transporting and storing

explosives as per the “Explosives Rules 1940” or as amended. He

shall purchase the explosives, fuses, detonators etc. only from

licensed dealer. He shall maintain the account of explosive etc.

purchased and used by him. He shall be responsible for safe

custody or proper accounting of explosive materials. Engineer shall

have access to check stores of explosives and accounts thereof. All

precautions shall be taken and all rules complied with.

2.1.2 Where blasting is not practicable or prohibited, excavation shall be

done by wedging or chiseling and it shall be restricted to the quantity

required to the minimum. Of trenches exceed those shown in

drawings, the excess quantity shall not be paid for.

3.0 EARTH FILLING :

Filling shall be done worth good earth, murum, stone chips. It shall

be free from salts, organic matter, black cotton or slushy earth and

combustible material. All clods shall be broken.

3.1 Filling in trench shall be done in layers not exceeding 300 mm.

Apply watered and consolidated by ramming with iron or wooden

rammers weighing 7 to 8 kgs. And having base 30 cm. Sq. or 20


277

cm. Diameter. The filling trenches, the finished level surface shall be

flooded with water for at least 24 hours allowed to dry and then

rammed and consolidated after making good any settlement in

order to avoid settlement at a later stage. Finished level of filling

shall be kept to a slope intended to be given to the ground.

4.0 RUBBLE SOLING :

It shall be clean, hard and obtained from trap or ballast stone.

Stone aggregate from trap or ballast stone) of 200 to 230 mm shall

be used. It shall be clean hard and reasonably free from

laminations. The rate shall be inclusive of packing with smaller stone

chips. Filling with grit or sand, watering the surfaces and

consolidating each layer with 8/10 tonnes roller or manually as

directed.

5.0 DIMENSIONS :

Figured dimensions of drawings shall supersede measurements by

scale and drawings to a large scale shall take precedence over those

to a smaller scale. Special dimensions, or directions in the

specifications shall supersedes all other. All dimensions shall be

checked on site prior to execution. The dimension where stated do

not allow for waste, lap, joints etc. but the contractor shall provide at

his own cost sufficient labour and materials to cover such waste, pals

joints etc.

The levels, measurements and other information concerning the

existing site as shown on the drawings are believed to be correct, but

the contractor should verify them for himself and also examine the

nature of the ground as no claim or allowance whatsoever will be


278

entertained on account of any errors or omissions in the levels or the

description of the ground levels or strata turning out different from

what was expected or shown on the drawings.

6.0 SETTING OUT WORKS :

The contractor shall set out the works indicated in the conditions of

contract. The contractor shall provide suitable stones with fall tops

and building the same in concrete for temporary bench marks. All

the pegs for setting out the works and fixing the levels required for

the execution thereof shall if desired by Engineer, likewise be built in

masonry at such places and in such a manner as the Engineer-in-

charge may direct. The contractor shall carefully protect and

preserve all bench marks and other marks used in setting out the

works.

7.0 MATERIAL :

7.1 Quality :

All materials used in the works shall be of the best quality of their

respective kinds as specified therein, obtained from sources and

suppliers approved by the Engineer and shall comply strictly with the

test prescribed hereafter, or where tests are not laid down in the

specifications with the requirements of the latest issues of the relevant

Indian Standards.

7.2 Sampling and testing :

All materials used in the works shall be subjected to inspection and

test in addition to test certificates. Samples of all materials proposed


279

to be employed in permanent works shall be submitted to the

Engineer-in-charge for approval before they are brought to the site.

7.2.1 Samples provided to the Engineer for their retention are to be

labeled in boxes suitable for storage. Materials or workmanship not

corresponding in character and quality with approved samples will

be rejected by the Engineer.

7.2.2 Samples required for approval and testing must be supplied

sufficiently in advance to allow for testing and approval, due

allowance being made for the fact that if the first samples are

rejected, further samples may be required. Delay to the works

arising from the late submission of samples will not be acceptable as

a reason for delay in completion of the works.

7.2.3 Materials shall be tested before leaving the manufacturer’s premises,

quarry or source, wherever possible. Materials shall also be tested

on the site and they may be rejected if not found suitable or in

accordance with the specification, notwithstanding the results of the

tests at the manufacturer’s works or elsewhere or test certificate or

any approval given earlier. The contractor will bear all expenses for

sampling and testing, whether at the manufacturer’s premises at

source at site or at any testing laboratory or institution as directed by

the Engineer-in-charge. No extra payment shall be made on this

account.

7.3 Dispatch of materials :

Materials shall not be dispatched from the manufacturer’s works to

the site without written authority from the Engineer.


280

7.4 Test Certificate :

All manufacturer’s certificate of test, proof sheets etc. showing that

the materials have been tested in accordance with the requirement of

this specification, items and drawing and of the appropriate Indian

Standards are to be supplied free of charge on request to the

Engineer.

7.5 Rejection :

All materials that have not been found to confirm to the

specifications will be rejected forthwith and shall be removed from

the site by the contractor at his own cost. The Engineer shall have

power in cause the contractors to purchase and use such materials

from any particular source, as may in his opinion be necessary for

the proper execution of the work.

8.0 STORING OF MATERIALS AT SITE :

All the materials used in the works shall be stored on racks, support,

in bins, under cover etc. as appropriate to prevent deterioration or

damage from any cause whatsoever to the entire satisfaction of the

Engineer.

8.1 The materials shall be stored in a proper manner at places at site

approved by the Engineer. Should be the place where materials is

stored by the contractor be required by the employer for any other

purpose, the contractor shall forthwith remove the materials from

that place at his own cost and clear the place for the use of the

employer i.e. CIDCO.


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9.0 WATER :

Water from approved source :

Clean fresh potable water only shall be used for the works. The

water shall be free from any deleterious matter in solution or in

suspension and be obtained from an approved source. The quality

of water shall confirm to I.S. 456. Contractor has to make his own

arrangement for water.

9.1 Storing :

The contractor shall make his own arrangement for storing water, if

necessary, in drums or tanks or cisterns as approved by the

Engineer. Care shall be exercised to see that water is not

contaminated.

10.0 WORKMANSHIP :

10.1 All works shall be true to level, plumb and square and the corners,

edges and arising in all cases shall be unbroken and neat.

10.2 Any work not to the satisfaction of the Engineer-in-charge or his

representative will be rejected and the same shall be rectified or

remove and replaced with work of the required standard of

workmanship at no extra cost.

11.0 Providing dry trap/ granite/ quartzite/ gneiss rubble stone soiling

230 mm thick including hand packing and compacting complete.

11.1 GENERAL : The item provides for supply of dry trap rubble soling and labour for

laying of specified type of stones in the specified thickness including

preparing the subgrade to proper section by scraping, dressing,


282

watering & compaction with vibratory roller etc. and hand packing the

rubble chips to the required line, curve, grade and section.

11.2 Diversion :

When the traffic can be allowed on the road side berms without much

inconvenience to traffic or impediment to the work, this shall be

provided by the contractor at his own cost. He shall provide the

necessary barricading, warning boards and signals and watchmen by

day and red lights at night and comply with relevant provisions of

specification No. BR.1 of Red Book. Otherwise, a separate diversion

shall be provided according specification No. BR. 1 of Red Book.

11.3 CONSTRUCTION :

11.3.1 Preparation of sub-grade :

The sub-grade shall be marked by stakes and strings for the required

width for laying of the soling in line, curve, section and grade with

reference to the centre line. The edge line stakes shall be ranged for a

sufficiently long length to obtain straight lengths and uniform curves.

The contractor shall clear off the area and do the necessary trimming or

filling for laying of the soling in line, curves, grades and section. All

fillings shall be watered and compacted to get maximum consolidation.

The camber, super elevation etc. of the sub-grade shall conform in

shape to those of the finished road surface and if in any section the

road surface is loose, undulating or uneven, the contractor shall at his

own cost make it up with suitable material, water and compact it and

obtain the correct section. Camber boards shall be used to get the

required section.

11.3.2 Laying Soling :

The rubble collected by the roadside shall be laid with the largest face

downwards and in contact with each other. the stone shall break joint as


283

far as possible. The full thickness of the soling shall generally be made

with one stone only. The junction of the old road and the new

construction shall be diagonal in plan and the soling shall be in level

with the corresponding course of the road.

Unless otherwise provided in the plans or directed by the Engineer, the

width of the soling shall be 30 cm. more than that of the metal above.

11.3.3 Hand - packing :

As the laying of rubble advances the soling shall be hand packed by

wedging and packing with 80 mm metal coed for the purpose in the

joints of the soling and driving them by hammers in place so as to fill

the voids as completely as possible. This operation of hand packing

shall follow the rubble laying closely.

The soling shall be laid and hand packed true to grade and section and

these shall be often checked by boning rods, template boards and fish

line etc. The grades, section etc. of the soling shall correspond to those

of the surfacing coming on it.

The soling thus laid shall be finished by knocking out projecting stones

and filling depressions by chips to come up to the grade and camber.


1) Setting out including labour and materials like stakes, strings, fish

line, boning rods, and camber boards.

2) Diversion, barricading, signaling and controlling traffic if

necessary unless separately provided in the tender.


284

3) Conveying the rubble from stacks on the roadside and laying the

soling to the required line, curve, grade and section including

clearing, sectioning, dressing grades and section and compacting

the section, breaking rubble and hand packing with 80 mm

metal, filling the voids with rubble chips, sand stone screening

etc.

4) All labour, materials and use of equipment and tools required for

carrying out the work satisfactorily.


The contract rate shall be for one cubic metre of soling laid, hand

packed and finished.

The width and depth shall be restricted to the specified width and depth.


of a metre and the quantity calculated correct upto two places of

decimals of a cubic metre. No deduction shall be made for voids.

12.0 PROVIDING 650 MM DIA STONE COLUMN :

The vertical bore of 650 mm dia shall be drilled through an approved

agency who are well equipped with machinery. Temporary fences,

guards, lights and protective work necessary for protection of workers,

supervisors, Engineer or any other persons permitted access to site.

All labour, material, plant, equipment such as winch, tripod stand,

pulley, rope arrangement, slush pump, chisel, C.I. casing, rammer

and other allied machinery.

The contractor shall be responsible for the accuracy of setting out of

works and fixing the levels required for the execution thereof.


285

Carefully protect and preserve all bench marks and other marks used

in setting out of the work.

The contractor shall take every precaution to avoid damage to the

existing structure in the vicinity as a result of boring of stone column.

The contractor has to get approval before and after drilling of bore.

12.1 Stone Column :

12.1.1 Drilling of Vertical Bore :

The Vertical bore of 650mm dia shall be drilled through an approved

agency who are well equipped with machinery such as which, tripod

stand, pulley, rope arrangement, slush pump chisel, C.I. casing

rammer and other allied machinery of adequate capacity for drilling

the bore. The bore shall be perfectly vertical upto the hard strata.

Bentonite clay shall be applied as and when required to stabilize the

sides.

The contractor has to get approval before and after drilling of bore.

12.2 Construction of stone column :

The stone column shall be constructed from well graded stone of

50mm to 2mm size stabilized by 3% lime. All the materials used shall

be got approved from the competent authority before starting the

construction. The aggregate along with 3% lime shall be filled in layers

and compacted by ramming by mechanical rammer or any other

effective means. Any discrepancy during the construction of stone

column shall be brought to the notice of the Engineer from time to

time.


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12.3 Providing and fixing cages :

A steel cage of 8 numbers, 8mm dia for steel bars tied with 8mm for

steel rings is to be used inside the gabion to maintain item circular

shape while placing stone aggregates.

12.3.1 Rings should be spread @600 mm c/c for top portion of 3m. length of

stone column. For remaining length rings are to be speced at 1m. c/c.

12.4 GEOBOXES OVER STONE COLUMNS :

12.4.1 Providing and laying Ropenet/CE 121 :

The item provides for providing and laying ropenet or CE 121 on the

leveled surface.

Item to include :

1. Providing and laying Ropenet or CE 121

2. Providing and laying 50mm thick grit / CNS murum

3. Rolling and compacting with vibratory roller

4. Cost of all materials, labour, taxes, freight, transportation etc.

The work to be carried out as per Manufacturer’s instructions.

Mode of Measurement :

The contract rate shall be for one sq.metre of ropenet/CE 121

provided and laid.

12.4.2 Providing Geoboxes over Ropenet/CE 121 :

Scope of work and item to include :

The item provides for providing and laying, fixing in position Geobox

over Ropenet/CE 121 on leveled surface of 600 x 600 x 230 mm. Size

made up of Geobox net/CE 153 and border rope, fixing in geoboxes

aggregate 60-80mm, 40-60mm and 25-40mm in proportion 4:2:1


287

and rolling and compacting the entire boxes with vibratory roller

including cost of all materials, labours, taxes, freight, transportation,

leads and all lifts etc. complete.

The work to be carried out as per manufacturer’s instructions.

Mode of Measurement :

The contract rate shall be for one sq.metre of Geobox fixed.

12.4.2.1 Scope of work and item to include :

The item provides for providing and laying, fixing in position Geobox

over Ropenet/CE 121 on leveled surface of 600 x 600 x 230mm size

made up of Geobox net/CE 153 and border rope. Fixing the geobox

with polymer/bamboo bodkins of required heights, providing and

filling in geoboxes aggregate 60-80mm and 25-40mm in proportion

4:2:1 and rolling and compacting the entire boxes with vibratory roller

including cost of materials, labours, taxes, freight, transportation, leads

and all lifts etc. complete.

The work to be carried out as per Manufacturer’s instructions.

12.4.2.2 Mode of measurement :

For Geobox net the contract rate shall be for on sq.meter of Geobox

net fixed. For Polymer bodkins the contract rate shall be per number of

polymer bodkins provided and fixed. For well graded machine crushed

aggregates, the contract rate shall be per cum. of Geoboxes filled

including compaction. The compaction shall be paid at per sqm. of

compacted surface.


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13.0 Geo boxes of Netlon – CE 121, CE 153, Polymer/Bamboo bodkins

with rope and well graded machine crushed aggregates

13.1 The item provides for providing, laying and fixing CE 121 on leveled

surface, CE 153 for making geo boxes by using polymer/bamboo

bodkins with rope of size 600 x 600 x 230mm or of required size.

Providing and filling in geo boxes well graded machine crushed

aggregates of size ranging from 2 mm to 75 mm in the proportion of

60-75mm, 40-60mm and 2-40mm with 4:2:1 ratio and compacting

the entire boxes with mechanical means.

The work to be carried out as per drawing and as directed by

Engineer.

13.2 Mode of Measurement :

For Netlon CE 121 & CE 151 the contract rate shall be for one

sq.metre of Netlon fixed. For Polymer/bamboo bodkins the contract

rate shall be per number of bodkins provided and fixed. For well

graded machine crushed aggregates, the contract rate shall be per

cu.metre of Geoboxes filled. The compaction shall be paid at per

sq.metre of compacted surface.

14.0 Providing & fixing polymer/bamboo bodkins with rope as per drawing

for fixing and jointing of Netlon CE 153 and as directed by Engineer

etc. complete.

14.1 The work shall be carried out as per description given in Schedule “A”

(Bill of Quantities) and/or as directed by Engineer.

15.0 Providing & fixing well graded machine crust aggregate size ranging

from 75mm to 2mm filling voids with 12mm aggregates etc.

complete.


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16.0 Compacting the top surface well graded filled in boxes by mechanical

means etc. complete.



17.0 SPECIFICATIONS FOR READY MIX CONCRETE

17.1 Batching of Concrete ingredients:

For all concreting, only Ready Mixed Concrete (RMC) manufactured

at site is mandatory, weigh batching plant or obtained from

approved R.M.C. supplying agencies or produced at site using

mechanical mixers and weigh batchers as per item description, will

be used. The R.M.C. supplying agency will supply mix design details

in advance before start of delivery.

17.2 Transporting, placing, compacting, finishing and curing:

Transporting, placing, compacting, finishing and curing of concrete

shall be in accordance with IRC Specifications.

17.2.1 Transporting:

For all RMC concreting, the concrete after discharge from batching

plant will be loaded in transit mixers and kept continuously agitated

while mix is in transit. At destination the mix will be unloaded in to

the hoppers of concrete pump. For site made concrete suitable

prescribed methods shall be adopted.


290

17.2.2 Placing:

The concrete produced in RMC plant/batching plant, when

discharged from transit mixer in pump hopper shall be kept

continuously agitated and pumped to destination placing point. Site

made concrete shall be placed by approved method of placing. The

height of any single lift of concrete shall not exceed 1.5 m for walls

and 2.0 m for columns. For columns where the height of pour is

more than 2.0 m, suitable arrangement in formwork should be

made so that the vertical drop of concrete is restricted to less than

2.0 m. Any such arrangement should be approved from the

engineer in advance before execution.

High velocity discharge of concrete causing segregation of mix shall

be avoided. The concrete shall be placed in the forms gently and

not dropped from the height exceeding 1.5m except in columns

where the maximum allowed will be 2.0 m. Each batch of concrete

will be placed in layer. Each layer of concrete shall be compacted

fully before the succeeding layer is placed and separate batches

shall be placed and fully compacted before the layer immediately

below has taken initial set. The layers should be sufficiently shallow,

to permit stitching of two layers together by vibration.

Concreting of any portion or section of the work shall be carried out

in one continuous operation and no interruption of concreting work

will be allowed without approval of the Engineer.

Plain concrete in foundations shall be placed, in direct contact, with

the bottom of excavation, the concrete being deposited in such a

manner, as not to get mixed with the earth. The concrete placed

below the ground level shall be protected from falling earth during

and after placing. Concrete placed in ground containing deleterious


291

substances, shall be kept free from contact, with such ground and

with water draining there from during placing and for a period of 7

days or otherwise instructed there after. Approved means shall be

taken to protect immature concrete from damage by debris,

excessive loading, abrasion, vibrations, deleterious ground water,

mixing with earth and other materials and other influences, that may

impair strength and durability of concrete.

Before starting of work contractor will get the concrete pouring

programme and its sequence approved by Engineer to avoid cold

joints.

17.2.3 Compaction:

External, Internal (needle) and surface (screed board) vibrators of

approved make shall be used for compaction of concrete.

a) External/internal vibrators shall be used for compaction of concrete

in foundations, columns etc. For sections such as slabs, the concrete

shall be compacted by external, internal and surface type vibrators,

depending on the thickness of layer to be compacted. 25 mm,

40mm and 60mm dia internal vibrators may be used. The concrete

shall be compacted by use of appropriate diameter vibrator by

holding the vibrator in position until:

i) Air bubbles cease to come to surface

ii) Resumption of steady frequency of vibrator after short period

of dropping the frequency, when the vibrator is first inserted.

iii) The tone of the vibrator becomes uniform

iv) Flattened, glistening surface, with coarse aggregated particles

blended into it, appears on the surface.

After the compaction is completed, the vibrator should be

withdrawn slowly from concrete so that concrete can flow in to

the space previously occupied by the vibrator. To avoid

segregation during vibration, the vibrator shall not be dragged


292

through the concrete nor used to spread the concrete. The

vibrator shall be made to penetrate into layer of fresh concrete

below if any, for a depth about 150mm. The vibrator shall be

made to operate at regular pattern of spacing. The effective

radii of action will overlap, approximately half a radius to

ensure complete compaction.

v) To secure even and dense surfaces free from aggregate

pockets, vibration shall be supplemented by tamping or

rodding by hand in the corners of forms and along the form

surfaces while the concrete is plastic.

vi) A sufficient number of spare vibrators shall be kept readily

accessible to the place of deposition of concrete to assure

adequate vibration in case of breakdown of those in use.

25mm diameter immersion vibrators shall be used in thin

sections upto 125mm, 40mm diameter immersion vibrators in

fairly wide sections like beams, slabs, columns etc. and 60mm

diameter vibrators in foundation, pilecaps or such large

section members. Screed vibratos shall also be used for slab

concreting.

vii) Plain concrete also shall be vibrated whenever and wherever

directed by Engineer to achiever full compaction, using needle

and screed vibrators as necessary.

17.2.4 Curing:

Curing shall be started at the earliest by spreading wet jute cloth

(hessian) and cover top with impervious sheet and subsequently

cured with spraying water. In inaccessible area to start with, curing

be started by spraying curing compound before starting membrane

curing.


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17.3 Placing temperatures :

During extreme hot weather, the concreting shall be done as per

procedures set out in IRC specifications.

Fine and coarse aggregates concreting shall be kept shaded and the

concrete aggregates sprinkled with water for a sufficient time before

concreting, in order to ensure that the temperature of these

ingredients is as low as possible prior to batching. The mixer and

batching equipment shall be also shaded and if necessary painted

white in order to keep their temperatures as low as possible. The

placing temperature of concrete shall be as low as possible in warm

weather and care shall be taken to protect freshly placed concrete

form over heading by sunlight in the first few hours of its laying. The

time of day selected for concreting shall also be chosen so as to

minimize placing temperatures. In case of concreting in exceptionally

hot weather the Engineer may in his discretion specify the use of ice

either flaked and used directly in the mix, or blocks, used for chilling

the mixing water. In either case no extra payment shall be made to

the contractor on this account.

17.4 Construction joints :

Construction joints in all concrete work shall be made as directed by

the Engineer. Where vertical joints are required, these shall be

shuttered as directed and not allowed to take the natural slope of the

concrete.

Before fresh concrete is placed against a vertical joint, the old

concreter shall be chipped/sand blasted, cleaned and moistened 25

hours before placing the concrete. All standing water should be

removed and dried with compressed air. Neat cement slurry shall

be applied on the chipped/sand blasted surface and mortar of the


294

same water cement ratio as the concrete and 10mm thick applied.

Where required suitable expansion joints shall also be provided as

directed by the Engineer.

The time of day selected for concreting shall also be chosen so as to

minimize placing temperatures. In case of concreting in exceptionally

hot weather the Engineer may in his discretion specify the use of ice

either flaked and used directly in the mix or blocks used for chilling

the mixing water. In either case the cost of ice either flaked and used

directly in the mix or blocks used for chilling the mixing water. In

either case the cost of ice and additional labor involved in weighing

and mixing etc. shall be borne by the contractor and noting will be

paid on this account.

17.5 Defective Concrete :

Should any concrete be found honeycombed or in any way defective,

such concrete shall on the instruction of the Engineer be cut out by

the Contractor and made good at his own expenses.

17.6 Exposed Faces, Holes and Fixtures :

On no account shall concrete surfaces be patched or covered up or

damaged concrete rectified or replaced until the Engineer or his

representative has inspected the works and issued written instructions

for rectification. Failure to observe this procedure will render that

portion of the works liable to rejection; in which case it will be

treated as a work which has failed to meet specified strength

requirements.


295

Holes for foundation or other bolts or for any other purposes shall

be moulded, and steel angles, holdfasts or other fixtures shall be

embedded, according to the drawings or as instructed by the

Engineer.

17.7 Cracks:

17.7.1 If cracks develop in concrete construction which in the opinion of the

Engineer may be detrimental to the strength of the construction, the

contractor at his own expense shall test the slab or other construction

as specified in Special Conditions. If under such test loads the cracks

develop further, the Contractor shall dismantle the construction,

carry away the debris, replace the construction and carry out all

consequential work thereto, without nay extra payment.

17.7.2 If any cracks develop in the concrete construction, which in the

opinion of the Engineer, are not detrimental to the strength of the

construction, the contractor at his own expense shall grout the cracks

with polymer cement grout of approved quality at his own expense

and risk and shall make good to the satisfaction of the Engineer the

surface finish which in the opinion of the Engineer has suffered

damage either in appearance or stability owing to such cracks. The

Engineer’s decision as to the extent of the liability of the Contractor

in the above matter shall be final and binding.

17.8 Finishes:

Unless otherwise instructed the face of exposed concrete placed

against formwork shall be rubbed down immediately on removal of

the formwork to remove irregularities. The face of concrete for which

formwork is not provide other that slabs shall be smoothed with a

float to give a finish equal to that of the rubbed down face, where

formwork is provided. The top face of a slab which is not intended


296

to be covered with other materials shall be leveled and floated to a

smooth finish at the levels or falls shown on the drawings or as

directed. The floating shall be done so as not to bring as excess of

mortar to the surface of the concrete. The top face of a slab

intended to be surfaced with other materials shall be left with a

spaded finish. Face of concrete intended to be plastered shall be

roughened by approved means to form a key.

When at site, concrete cube testing machine is used 10% of the

cubes should be tested at independent recognized laboratories

approved by Engineer at their cost.

17.9 Scope of work & item to include:

1. The item refer to ready mix concreter required for

R.C.C./P.C.C. works as mentioned in item description under

Schedule –‘A’ procured form reputed manufacturer approved

by Engineer. The material shall be conforming to IRC

specifications.

The material requirement shall be completed according to

Standard Specifications No.B.7.1 refer Page No. 38 for

controlled cement concrete.

2. The item include manufacturer with ingredients, control

temperature, transportation, pumping, placing, vibration and

curing of Ready Mix Concrete and all taxed, excise duty, sales

tax, octroi, insurance etc. levied by Govt./Semi-Govt./local

authority and cost of ready mix concrete and any penalty,

additional charges for controlling temperature upto casting or

any other charges levied by the manufacturer.


297

3. Proportioning of the mix/mix design shall be decided by the

contractor/RMC manufacturer to achiever strength specified in

item and shall be get approved by Engineer. The

proportioning of ingredients, use of ingredients and mix

designs parameters for various slumps shall be got approved

by Engineer prior to mix design.

4. Scaffolding shall conform to specifications No. B.6.5(a) and

got approved by the Engineer.

5. Forms shall conform to specifications No. B.6.5(b).

6. The concrete shall be pumped to the final positions as quickly

as possible by methods which will prevent segregation and

loss of ingredients.

7. The concrete shall be placed into its final position, compacted

and finished within 30 minutes of mixing the water and before

initial setting commences. The method of placing shall be

such as to avoid segregation. Placing shall be done in

balanced manner to avoid eccentric loads on the form work.

As far as possible the concreting shall be done continuously

and construction joints avoided.

If the area to be concreted is under water, the water shall be

removed by bailing out or using pumps and other devices.

8. Compaction shall be done by mechanical vibrators and also

by rods so that a dense concrete is obtained.

9. The concrete shall be adequately cured.

10 Immediately after the removal of forms, any undulations,

depressions, cavities, honey combing broken edges of corners


298

height spot defects shall be made good and finished with

cement mortar 1:2. But necessity of such finishing must be

exceptional and the total not exceed 1% on average.

11. Concrete which is partially hardened shall not be tempered or

re-mixed but shall be disposed off as desirable.

12 Sampling and testing shall be done as per IRC Specifications.

13. All labour, materials use of equipment, tools and plant,

installing and removal of scaffolding, flase work and forms

and branching necessary for the satisfactory completion of

item,

14. Compensation for injury to persons and damage to work or

property.

15. Establishment of site laboratory.

17.10 Sampling and Strength of designed concrete mix:

General:

Samples from fresh concrete shall be taken as per IS:1199 and cubes

shall be made, cured and tested at 28 days in accordance with IRC

Specifications.

In order to get a relatively quicker idea of the quality of Concrete,

optional tests on beams for modules of rupture at 72 + 2 hours or at 7

days, or compressive strength tests at 7 days may be carried out in

addition to 28 days compressive strength tests. For this purpose the

values should be arrived at based on actual testing. In all cases, the 28

days compressive strength specified in Table-2 shall alone be the

criteria for acceptance or rejection of the concrete.


299

17.11 Frequency of Sampling:

17.11.1 Sampling Procedure:

A random sampling procedure shall be adopted to ensure that each

concrete batch shall have a reasonable chance of being tested that is,

the sampling should be spread over the entire period of concreting and

cover all mixing units.

17.11.2 Frequency:

The minimum frequency of sampling concrete of each grade shall be in

accordance with the following:

Quality of concrete in the work (M3)

Samples Number of

1-5 1

6-15 2

16-30 3

31-50 4

51 and above 4 plus one additional sample for each additional 50m3 or part thereof

Note: At least one sample shall be taken from each shift. Where

concrete is produced at continuous production unit, such as ready-

mixed concrete plant, frequency of sampling may be agreed upon

mutually by suppliers and purchasers.

17.11.3 Test Specimen: Three test specimens shall be made from each sample for testing at 28

days. Additional samples may be required for various purposes such as

to determine the strength of concrete at 7 days or at the time of striking

the formwork, or to determine the duration of curing, or to check the

testing error. Additional samples may also be required for testing

samples cured by accelerated methods as described in IRC

Specifications.


300

17.11.4 Test results of sample: As per IRC Specifications.

Number of Test Result :

The total number of test results required to constitute an acceptance

record for calculation of standard deviation shall not be less than 30.

Attempts should be made to obtain the 30 test results, as early as

possible, when a mix is used for first time.

Standard deviation to be brought up to date. The calculation of the

standard deviation shall be brought up to date after every change of

mix design and at least once a month.

17.11.5 Determination of Standard Deviation:

Concrete of each grade shall be analyzed separately to determine its

standard deviation.

The standard deviation of concrete of a given grade shall be calculated

using the following formula from the results of individual tests of

concrete of that grade obtained as specified in Table.

Estimated standard deviation = S = Where:

Δ = Deviation of the individual test strength from the average

strength 'n' samples and

n = Number of samples test results.

When significant changes are made in the production of concrete

batches (for example changes in the material used, mix design,

equipment or technical control), the standard deviation value shall be

separately calculated for Such batches of concrete.

17.11.6 Assumed Standard Deviation:

Where sufficient test results for a particular grade of concrete are not

available, the value of standard deviation given in IRC Specifications

may be assumed.

ΣΔ2

n - 1


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17.12 Acceptance Criteria :

17.12.1 The concrete shall be accepted if it passes all strength requirements and acceptance criteria as stipulated in IRC Specifications.

11.12.2 If the concrete is deemed not to comply pursuant to the structural

adequacy of the parts affected shall be investigated and any

consequential action as needed shall be taken.

17.12.3 Concrete of each grade shall be assessed separately.

17.12.4 Concrete shall be assessed daily for compliance.

17.12.5 Concrete is liable to be rejected if it is porous or honey combed, its

placing has been interrupted without providing a proper construction

joint, the reinforcement has been displaced beyond the tolerances

specified, or construction tolerances have not been met. However, the

hardened concrete may be accepted after carrying out suitable

remedial measurement to the satisfaction of the Engineer.

17.13 FAILURE TO MEET SPECIFIED REQUIREMENTS :

17.13.1 If from the cube test results is appears that some portion of the works has

not attained the required strength, the Engineer may order that portion of

the structure be subjected to further testing of any kind whatsoever as

desired by the Engineer, including, if so desired by him. Full load testing

of the suspected as well as adjacent portions of the structure as specified

in the Conditions of Contract. Such testing shall be at the Contractor’s

cost.

17.13.2 If the strength of concrete in any portion of the structure is lower than the

required strength, but is considered nevertheless adequate by the

Engineer so that demolition is not necessary, the Contractor shall be paid

a lower rate for such lower strength concrete as determined by the

Engineer.


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17.14 TESTING OF CONCRETE :

The contractor shall erect at site a suitable laboratory at his cost for

routine testing of materials, testing of materials, testing of concrete

cubes etc. the samples of materials used in the work, tested materials

as well as record of tests shall be kept on site for display. The cost of

carrying out the tests in his laboratory as well as outside laboratories as

approved by the Engineer shall be borne by the Contractor.

11.14.1 As frequently as the Engineer may require, testing shall be carried out

in the field for;

i) Moisture content of sand.

ii) Moisture content of aggregates.

iii) Silt content of sand.

iv) Grading of sand.

v) Slump test of concrete.

vi) Grading of aggregates.

vii) Concrete cube test.

17.14.2 The contractor shall provide and maintain at all times, until the works

are completed, equipment and staff required for carrying out these

tests. The contractor shall grant the Engineer or his representative full

access to his laboratory at all times and shall produce on demand

complete records of all tests carried out on site.

17.14.3 Before concreting commences on any section of the works the

contractor shall obtain approval of the Engineer or his representative as

regards the form and reinforcement conforming with the drawings. He

shall also indicate to the Engineer in writing and obtain his approval for

positions of construction joints. The Engineer or his representative’s

approval shall not relieve the contractor of any of his obligations to

comply with the provisions of this specifications or contract.


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17.15 ADMIXTURES :

Approved admixtures and air entraining agents may be permitted by

the Engineer at his discretion provided that the strength requirements

and durability are not affected by their use.

17.16 SLUMP TEST :

Only sufficient amount of water shall be added to the cement and

aggregates during mixing to produce concrete having sufficient

workability to enable it to be well consolidated to fill up the corners of

shuttering and to work around the reinforcement and to give specified

surface finish and to have the specified strength.

The slump of concrete shall be determined from time to time by

carrying out slump tests.

In case the slump of concrete shall be as per the requirements of mix

design, it shall be maintained through out the concrete for a particular

member.

Slump test apparatus and labour etc. shall be provided by the

contractor free of cost.

17.17 Measurement :

Concrete and reinforcement shall be paid separately unless

otherwise specified.

The Contract rate shall be for a unit of one cubic meter of concrete.

The concrete shall be measured for its length, breadth and depth

limiting dimensions to those specified on the drawings or as ordered

by the Engineer.

The Volume of concrete measured shall include that occupied by

1) Reinforcement and other metal sections.


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2) Cast in components each less than 0.01 M3 in volume.

3) Rivetts, fillets or internal splays each less than 0.005 M2 in

cross sectional area.

4) Pockets and holes not exceeding 0.01 M3 in volume.

5) Rates for precast concrete shall include demoulding, handling,

storing, transporting and erecting at site, including all

clamping, bolting, bracing that may be required during

erection, including erection equipment.

17.18 In order to exercise the required degree of constant control over the

concrete materials and their proportions, the contractor shall set up

and maintain at his own expense a testing laboratory at site. He shall

provide all apparatus required for sensitive testing of concrete and

concrete materials. In particular he must have the following

equipment set up in the site laboratory.

i) A set of Standard Sieves

ii) Sieve shaker

iii) Measuring Cylinders

iv) Slump Cones

v) Adequate number of Standard Moulds

vi) Weighing Balance

vii) Curing tank for cubes

viii) Concrete cube testing machine

Any other apparatus deemed necessary by the Engineer for proper

control shall be provided by the Contractor at his own expense. The

laboratory shall be staffed by qualified technicians.

When at site, concrete cube testing machine is used 10% of the

cubes should be tested at independent recognized laboratories

approved by Engineer at contractor’s cost.


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17.19 Ready-Mixed Concrete and Pumping Concrete

17.19.1 Ready-mixed concrete may be manufactured in a central automatic

weight Batching plant and transported to the job in agitating transit

mixer.

The maximum size of coarse aggregate shall be limited to one-third

of the smallest inside diameter of the hose or pipes used for

pumping. Provision shall be made for elimination of over-sized

particles by screening or by careful selection of aggregated. To

obtain proper gradation it may be necessary to combine and blend

certain fractional sizes to aggregates. Uniformity of gradation

throughout the entire job shall be maintained.

The quantity of coarse aggregate shall be such that the concrete can

be pumped, compacted and finished without difficulty.

17.19.2 Fine aggregates:

The gradation of fine aggregate shall be such that 15 to 30 percent

should pass the 0.30 mm screen and 5 to 10 percent should pass

0.15mm screen so as to obtain a pumpable concrete. Sands that

are deficient in either of these two sizes should be blended with

selected finer sands to produce these desired percentages. With this

gradation, sand having a fineness modulus between 2.4 and 2.8 are

generally satisfactory. However, for uniformity, the fineness modulus

of the sand should not vary more that 0.2 from the average value

used in proportioning.

17.19.3 Water, Admixtures and slump:

The amount of water required for proper concrete consistency shall

take into account the rate of mixing, length of haul, time of

unloading and ambient temperature conditions.


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Additions of water to compensate for slump loss should not be

resorted to nor should the design maximum water-cement ratio be

exceeded. Additional dose of retarder/plasticizer/superplasticizer

shall be used with prior approval of Engineer to compensate the loss

setting time and slump at contractor’s cost. Retempering water shall

not be allowed to be added to mixed batches to obtain desired

slump.

17.19.4 Transportation:

The method of transportation used should efficiently deliver the

concrete to the point of placement without significantly altering its

desired properties with regard to water-cement ratio, slump, and

homogeneity.

The revolving-drum truck bodies of approval make shall be used for

transporting the concrete. The number of revolutions at mixing

speed, during transportation, and prior to discharge shall be

specified and agreed upon. Reliable counters shall be used on

revolving-drum truck units. Standard mixer uniformity tests,

conforming to ASTM standards C 94-69 “Standard Specifications for

Ready Mix Concrete”, shall be carried out if desired by Engineer to

determine whether mixing is being accomplished satisfactorily.

17.19.5 Pumping of Concrete:

Only approved pumping equipment, in good working condition,

shall be used for pumping of concrete. Concrete shall be pumped

through a combination of rigid pipe and heavy-duty flexible hose of

approved size and make. The couplings used to connect both rigid

and flexible pipe section shall be adequate in strength to withstand

handling loads during erection of pipe system, misalignment, and

poor support along the lines. They should be nominally rated for at


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least 3.5 Mpa pressure and greater for rising runs over 30m.

Couplings should be designed to allow replacement of any section

without moving other pipe sections, and should provide full cross

section with no construction of crevices to disrupt and smooth flow of

concrete.

All necessary accessories such as curved sections of rigid pipe, swivel

joins and rotary distributors, pin and gate valves to prevent backflow

in the pipe line, switch valves to direct the flow into another pipe line,

connection device to fill forms from the bottom up, extra strong

couplings for vertical runs, transitions for connecting different size of

pipe, air vent for downhill pumping, clean-out equipment etc. shall

be provided as and where required. Suitable power controlled

booms or specialized crane shall be used for supporting the pipe

line.

17.19.6 Field control:

Sampling at both truck discharge and point of final placement shall

be employed to determine if any changes in the slump and other

significant mix characteristics occur. However, for determining

strength of concreter, cubes shall be taken from the placement end

of line. The RMC supplier should nominate a technically qualified

representative at site for sampling, testing and placing of concrete.

17.19.7 Planning:

Proper planning of concreter supply, pump locations, line layout

placing sequence and the entire pumping operation shall be made.

The concreter production, transportation and placing shall be

planned in such a manner that duration between addition of water

during mixing and placing of concrete in desired location is well

within time limits prescribed by the RMC manufacturer, however, this

is subjected to fulfillment of slump and other properties of concrete


308

as specified in tender. On failure to adherer to the time schedule by

the Supplier the Engineer may reject the concrete.

The pump wherever used should be as near the placing area as

practicable, and the entire surrounding area shall have adequate

bearing strength to support concrete delivery pipes. Lines from

pump to the placing area should be laid out with a minimum of

bends. For large spacing areas alternate lines should be installed

for rapid connection when required. Standby power and pumping

equipment should be provided to replace initial equipment, should

breakdown occur.

The placing rate should be estimated so that concrete can be

ordered at an appropriate delivery rate.

As a final check, the pump should be started and operated without

concrete to be certain that all moving parts are operating properly.

A grout mortar should be pumped in to the lines to provide

lubrication for the concrete, but this mortar shall not be used in the

placement.

When the form is nearly full and there is enough concrete in the line

to complete the placement, the pump shall be stopped and a go-

devil inserted and shall be forced through the line by water under

pressure to clean it out. The go-devil should be stopped at a safe

distance from the end of the line so that the water in the line will not

spill into the placement area. At the end of placing operation, the

line shall be cleaned in the reverse direction.


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17.20 SUBMISSION OF DOCUMENTS FROM RMC MANUFACTURER

Following document shall be submitted by the RMC manufacturer to

CIDCO through the contractor along with checklist for RMC specified

in the tender document.

1. Design Mix

2. Manufacturer’s Test Certificate for cement and plasticizer

3. Lab test certificates for all ingredient of concrete.

4. Delivery docket sheet mentioning the grade of concrete,

quality of ingredient used, slump, transit mixer vehicle no.

placement, location, time of concrete produce and placing etc.

18.0 FORMWORK

4990 - Specification for plywood for concrete shuttering work.

3696 - Safety code of scaffolds and ladders

4014 - Steel and tubular scaffoldings.

8989 - Safety code for erection of concrete framed structures.

456 - Code of practice for plain and reinforced concrete.

18.1 Definition:

The term “Formwork” or “Shuttering” shall include all forms, moulds,

sheeting, shuttering planks, walers, poles, posts, shores, struts and

strutting, ties, uprights, wallings, steel rods, bolts, wedges and all

other temporary supports to the concrete during the process of

setting.

18.2 Materials :

18.2.1 All facing formwork to come in contact with concrete in different

elements of the structures shall be of such material and size as

specified on drawings or as instructed by the Engineer.


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18.2.2 Timber facing formwork to come in contact with concrete for

“Exposed Concrete Surfaces” shall consist of lab-jointed or tongue

and grooved planks as directed by the Engineer and no joints shall

permit leakage of mortar at all from cast-in-situ concrete.

18.2.3 The materials for other backing and supporting formwork and their

sizes shall be selected by the contractor and shall be subject to the

approval of the Engineer.

18.3 Design:

The formwork shall be designed and constructed so that the concrete

can be properly placed and thoroughly compacted to obtain the

required shape, position and level subject to specified tolerances. It

is the responsibility of the contractor to obtain the results required by

the Engineer, whether or not some of the work is sub-contracted.

Approval of the proposed formwork by the Engineer will not diminish

the Contractors responsibility for the satisfactory performance of the

formwork, nor for the safety and co-ordination of all operations.

18.4 Formwork for Exposed Concrete Surfaces:

The facing formwork, unless indicated otherwise on drawings, or

specifically approved by the Engineer in writing, shall generally be

made with materials not less than the thickness mentioned below for

different elements of the structure.

18.4.1 Plain slab soffits, and sides of beams, girders, joists and ribs and

side of walls, fins, parapets, pardis, sub-breakers etc. shall be made

with :

a) Steel plates not less than 3mm thick of specified sizes stiffened

with a suitable structural frame work, fabricated true to plane

with a tolerance of +/- 2mm within the plate.


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b) Plywood plates not less than 12mm thick (IS: 4990 -

Specification for plywood for Concrete Shuttering Work) or

3mm thick with a 20mm timber plank backing, of specified

sizes stiffened with a suitable timber framework.

18.4.2 Bottom of beams, girders and ribs, sides of columns shall be made

with:

a) Steel plates not less than 5mm thick of specified size stiffened

with a suitable structural frame, fabricated true to plane with a

tolerance of +/-2mm within the plate.

b) Timber planks of 35mm actual thickness and of specified

surface finish, width and reasonable length.

c) Plywood plates not less than 12mm thick, of specified sizes

stiffened with a suitable timber framework.

18.5 Erection of Formwork:

The following shall apply to all formwork:

18.5.1 To avoid delay and possible erection of the formwork, the Contractor

shall obtain sufficiently in advance, the approval of the Engineer for

the design of forms and the type of materials used before fabricating

the forms. (Ref ACI 347) Formwork for concrete of equivalent I.S.

Code)

18.5.2 All shutter planks and plates shall be adequately backed to the

satisfaction of the Engineer by a sufficient number and size of walers

or framework to ensure rigidity during concreting. All shutters shall

be adequately strutted, braced and propped to the satisfaction of the

Engineer to prevent deflection under deadweight of concrete and

superimposed live load of workmen, materials and plant, and to

withstand vibration. No joints in proper shall be allowed.


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18.6 Vertical props shall be supported on wedges or other measures shall

be taken where the props can be gently lowered vertically during

removal of the formwork. Props for an upper story shall be placed

directly over those in the storey immediately below, and the lower

props shall bear on a sufficiently strong area.

1) Care shall be taken that all formwork is set plumb and true to

line and level or camber or batter where required and as

specified by the Engineer.

2) Provisions shall be made for adjustment of supporting struts

where necessary. When reinforcement passes through the

formwork care should be taken to ensure close fitting joints

against the steel bars so as to avoid loss of fines during the

compaction of concrete.

3) If the formwork is held together by bolts or wires, these shall

be so fixed that no iron will be exposed on surface against

which concrete is to be laid. In any case wires shall not be

used with exposed concrete formwork. The Engineer may at

his discretion allow the Contractor to use tie-bolts running

through the concrete and the Contractor shall decide the

location and size of such tie-bolts in consultation with the

Engineer. Holes left in the concrete by these tie-bolts shall be

filled as specified by the Engineer at no extra cost.

4) Formwork shall be so arranged as to permit removal of forms

without jarring the Concrete. Wedges, clamps and bolts shall

be used wherever practicable instead of nails.

The formwork for beams and slabs shall be so erected so that

forms on the sides of the beams and the soffit of slabs can be

removed without disturbing the beam bottoms or props under

beams.


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5) Surface of forms in contact with concrete shall be oiled with a

mould oil of approved quality or clean diesel oil. If required

by the Engineer the contractor shall execute different parts of

the work with different mould oils to enable the Engineer to

select the most suitable. The use of oil which results in

blemishes of the surface of the concrete shall not be allowed.

Oil shall be applied before reinforcement has been placed

and care shall be taken that no oil comes in contact with the

reinforcement while it is being placed in position.

The formwork shall be kept thoroughly wet during concreting

and for all the whole time that it is left in place.

6) Immediately before concreting is commenced, the formwork

shall be carefully examined to ensure that following:

a) Removal of all dirt, shavings, sawdust and other refuse

by brushing and washing.

b) The tightness of joints between panels of sheathing and

between these and any hardened core.

c) The correct location of tie bars, bracing and spacers,

and especially connection or bracing.

d) That all wedges are secured and firm in position.

e) That provision is made for traffic on formwork not to

bear directly on reinforcing steel.

7) Formwork shall be continuously watched during the process of

concreting. If during concerting any weakness develops and

formwork shows any distress the work shall be stopped and

remedial action shall be taken.


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18.7 Exposed Concrete Work:

Exposed concrete surfaces shall be smooth and even originally as

stripped without any finishing or rendering. Where directed by the

Engineer, the surface shall be rubbed with carborundum stone

immediately on striking the forms. The Contractor shall exercise

special care and supervision of formwork and concreting to ensure

that the cast members are made true to their sizes, shapes and

positions and to produce the surface patterns desired. No

honeycombing shall be allowed. Honeycombed parts of the concrete

shall be removed by the Contractor as directed by the Engineer and

fresh concrete placed without extra cost, as instructed by the

Engineer. All materials, sizes and layout of formwork including the

locations for their joints shall have prior approval of the Engineer or

the Architect.

18.8 Camber:

Forms and false work shall be generally cambered as indicated in

the drawings or as instructed by the Engineer. However, for beams

up to 5m span and slabs upto 4m span camber is not normally

required to be provided.

18.9 Tolerances :

In accordance with IS: 456 2000 and MORT & H section 1500.

18.10 Age of Concrete at Removal of Formwork :

In accordance with ISL 456 2000 and MORT & H section 1500.

The Engineer may vary the periods specified in IS: 456-2000 if he

considers it necessary. Immediately after the forms are removed,

they shall be cleaned with a jet of water and a soft brush.


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18.11 Stripping of Formwork :

Formwork shall be removed carefully without jarring the concrete,

and curing of the concrete shall be commenced immediately.

Concrete surfaces to be exposed shall, where required by the

Engineer, be rubbed down with carborundum stone to obtain a

smooth and even finish. Where the concrete requires plastering or

other finish later the concrete surface shall be immediately hacked

lightly all over as directed by the Engineer. No extra charge will be

allowed to the Contractor for such work on concrete surfaces after

removal of forms.

18.12 Reuse of Forms :

The Contractor shall not be permitted reuse of timber facing

formwork brought new on the works more than 5 times for exposed

concrete formwork and 8 times for ordinary formwork. 5 or 8 uses

shall be permitted only if forms are properly cared for, stored and

repaired after each use. The Engineer may in his absolute discretion

order rejection of any forms he considers unfit for use for a

particular item, and order removal from the site of any forms he

considers unfit for use in the works. Used forms brought on the site

will be allowed proportionately fewer uses as decided by the

Engineer.

Use of different quality boards or the use of old and new boards in

the same formwork shall not be allowed.

18.13 Measurements:

1. Where formwork is paid separately, measurements shall be of

the area of finally exposed surface requiring shuttering

including curves, angles, splays, metres, bevels, etc. for which


316

no special rate shall be allowed. The rates shall be inclusive of

all work connected with provision of formwork, its erection and

removal and treatment of the concrete surface immediately

after removal of the formwork.

2. No extra payment shall be made for holes to be made in

formwork for inserting electrical conduits, hooks for fans, for

plumbing work.

3. Where boxes or pockets are required to be formed in the

concrete, they will be paid for separately at the Contract Rates,

but in measuring the area of concrete surfaces shuttered, no

deduction will be made for openings upto 0.4m2. For voids

larger than 0.4m2 the surface of formwork forming the voids

shall be paid at rates of formwork set out in the Schedule and

the area of voids deducted from the face area of shuttering.

4. No deductions shall be made from formwork of main beams

where the secondary beams intersects it. Formwork to

secondary beams shall be measured upto sides of the main

beams. No deduction shall be made from the formwork to

stanchion or column casings at intersections of beam.

5. No payment shall be made for temporary formwork used in

concreting, nor for formwork required for joints or bulkheads,

in floors, elsewhere, whether such joints are to be covered

later with concrete or mastic or other material.

19.0 REINFORCEMENT:

List of Bureau of Indian Standard Code of Practice (ISI)

432 - Mild steel and medium tensile steel bars and hard

drawn steel wire for concrete.

1786 - Specifications for HYSD bars and wires for concrete

reinforcement


317

250 - Code of practice for bending and fixing of bars for

concrete reinforcement

2751 - Recommended practice for welding of mild steel

reinforcement.

19.1 Steel:

Mild Steel, rounds conforming to IS: 432, HYSD bars conforming to

IS: 1139 of Fe 415, hard drawn steel wire fabric shall conform to IS

1566-1877, or rolled steel made from structural steel conforming to

IS:226. Any other steel specified for reinforcement shall conform in

every respect to the latest IRC Specifications and shall be of tested

quality under the ISI Certifications Scheme. All reinforcing work for

concrete work shall be executed in conformity with the drawings

supplied and instructions given by the Engineer and shall generally

be carried out in accordance with the relevant Indian Standard

Specifications (IS: 2502) & IRC Specifications.

19.2 Inspection of Testing:

Every bar shall be inspected before assembling on the work and any

defective, brittle, excessively rusted for burnt bars shall be removed.

Cracked ends of bars shall be cut out. Specimens sufficient for three

Tensile Tests per 10 tonnes of bars and for each different size shall

be sampled and tested by the Contractor. Batches shall be rejected if

the average results of each batch are not in accordance with the

specifications.

19.3 Lapping:

i) As far as possible bars of the maximum length available shall

be used. Laps shown on drawings or otherwise specified by

the Engineer will be based on the use by the contractor of bars

of maximum length. In case the contractor wished to use


318

shorter bars, laps shall be provided at the contractors cost in

the manner and at the location approved by Engineer.

ii) As and when necessary welded laps shall be provided as

specified by the Engineer.

19.4 Spacing, supporting and Cleaning:

i) All reinforcement shall be placed and maintained in the

position shown on the drawing.

ii) The contractor shall provided approved type supports as

specified on the drawings for maintenance the top bars of the

slab in position.

iii) The 20 SWG annealed mild steel wire shall be used as

binding wire. All bars crossing one another shall be bound

with this wire twisted tight to make the skeleton or network

rigid so that the reinforcement is not displaced during placing

of concrete.

iv) On no account shall be bars be oiled or painted nor shall

mould oil used on the form work be allowed to come in

contact with the bars. Cement wash to bars shall not be

permitted.

19.5 Welding:

i) Where specified all welding shall be carried in accordance

with IS: 2571. Only qualified welders shall be permitted to

carry out such welding.

ii) For cold twisted reinforcement, welding operation must be

controlled to prevent a supply of large amounts of heat larger

than that can be dissipated. The extreme non twisted end


319

portion shall be cut off before welding. Electrodes with futile

coating should be used.

iii) The welding procedure shall be approved by the Engineer and

tests shall be made to prove the soundness of the welded

connection.

19.6 Measurement:

i) The weight of steel to be paid for at the contract rates shall be

the weight of bars as mentioned on the drawings or as

instructed by the Engineer including stirrups, ties, spacer bars,

chairs and any other steel works specified as reinforcement

but excluding welding and cover blocks. Laps as specified on

the drawing shall be paid for. Laps required because of the

contractor’s use of shorter bars will not be paid for.

ii) The weight of any stirrups and tie bar shall be computed from

the dimension given on the drawings or bending schedules.

The weight in Kg/metre shall be taken as 0.785 kg/metre per

100 mm2 of cross section.

20.0 PROVIDING AND FIXING 100 MM DIA AC/PVC PIPE FOR

WEEP HOLES:

20.1 Scope of work, item to include:

i) Pipes of respective diameter, fitting, cement mortar, cement

concrete and necessary fixtures.

ii) All necessary labour, materials and use of tools.

20.2 Mode of Measurement and Payment :

The contract rate shall for one meter or part thereof pipe actually laid.

The measurement shall be over all the fittings along with the centre line

from end to end.


320

16.0 Providing Trap/Granite/Quartzite/Gneiss Rubble Filling behind the

abutment, return walls etc. complete.

16.1 MATERIALS :

The stones to be used shall be broken rubble with fairly regular shape

and not weathered or decayed stones. Stones shall be selected for their

large size. The stones shall be about 0.015 cu.m. or 15 litres in size

unless otherwise ordered by the Engineer, having regard to the nature

of the stone being quarried. The stones to be used for wedging in the

joints between stones shall be chips of such size as to snugly fill up the

interstices in most cases. All suitable rubble obtained from foundation

excavation shall be made use of first. The rate to be charged for this

rubble to the contractor shall be that which is entered in the Schedule

“A” and if not so entered, the Divisional schedule rate current at the

time of tender.

16.2 DETAILS OF CONSTRUCTION :

Dewatering if necessary shall be done according to specification No.

BR.4 of Red Book. The bed on which rubble filling is to be laid shall be

cleared of all loose materials leveled and consolidated and got

approved by the Engineer before starting rubble filling. Rubble filling

behind abutments, returns or wings shall be laid in regular horizontal

layers of not more than 30 cm. in thickness closely packed and

compacted and firmly set with their broadest face downwards. The

interstices between adjacent stones shall be wedged in with spalls of the

proper size, well driven in with hammers or wooden mallets to ensure

tightly packed layers. Such wedging shall be carried on simultaneously

with the placing in position of the larger stones in each layer and shall

in no case be permitted to fall behind. Each layer shall be packed and

completed before the upper layer is started.


321

Backfilling required to be done if any, on the river-side of the abutment,

wings or returns shall be done simultaneously with the filling on the

landside. Special precautions should also be taken to prevent wedging

action against masonry. The concrete shall have been fully cured before

rubble filling.


1) Supplying broken rubble and spalls of approved quality and size.

2) All labour, materials and use of equipment and tools for properly

laying, hand packing and compacting the rubble.

3) Any other incidental charges to complete the work as per

sanctioned plan including dewatering unless separately provided

in the tender.


Rubble filling shall be measured in cubic metres limiting the dimensions

to those shown in the plan or as directed by the Engineer. The

dimensions shall be measured to two places of decimals in metres and

quantities worked out to two places of decimals of a cubic metre.

No deduction shall be made for voids.

The contract rate shall be for a unit of one cubic metre.

17.0 PROVIDING AND CASTING IN SITU M-20/M-25/M-30 USING READY

MIX CONCRETE:

All concrete works will be by providing and casting RCC & PCC M-

20/M-25/M-30 by using Ready mix concrete manufactured by any

reputed manufacturer approved by Engineer-in-charge using maximum

20mm graded trap stone aggregate for RCC raft foundations, walls,

beams, slab including dewatering, centering, form work, etc. and

including all taxes etc. complete.


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17.1 Scope of work & item to include-

1. The item refer to ready mix concrete required for R.C.C. & P.C.C.

works as mentioned above procured from reputed manufacturer

approved by Engineer. The contractor shall be conforming to IS:

456-2000 or its amendments for controlled cement concrete.

The material requirement shall be completed according to

Standard Specifications No.B.7.1. refer Page No.38 for controlled

cement concrete.

2. The item include manufacture with ingredients, control

temperature, transportation, pumping, placing, vibration and

curing of Ready mix concrete and all taxes, excise duty, sales tax,

octroi, insurance etc. levied by Govt/Semi-Govt/local authority and

cost of ready mix concrete and any penalty, additional charges for

controlling temperature upto casting, or any other charges levied

by the manufacturer.

3. Proportioning of the mix/mix design shall be decided by the

contractor/RMC manufacture to achieve strength specified in item

& shall be get approved by Engineer-in-charge. The

proportioning of ingredients, use of ingredients and mix designs

parameters for various slumps shall be got approved by Engineer-

in-charge prior to mix design.

4. Scaffolding shall conform to specifications No.B.6.5 (a) and got

approved by the Engineer.

5. Forms shall conform to specifications No.B.6.5 (b).

6. The concrete shall be pumped to the final positions as quickly as

possible by methods which will prevent segregation and loss of

ingredients.

7. The concrete shall be placed into its final position, compacted and

finished before initial setting commences. The method of placing

shall be such as to avoid segregation. Placing shall be done in a

balanced manner to avoid eccentric loads on the form work.


323

As far as possible the concreting shall be done continuously and

construction joints avoided.

If the area to be concreted is under water, the water shall be

removed by bailing out or using pumps and other devices.

8. Compaction shall be done by mechanical vibrators and also by

rods so that a dense concrete is obtained.

9. The concrete shall be adequately cured.

10. Immediately after the removal of forms, any undulations,

depressions, cavities, honey combing broken edges or corners

height spots defects shall be made good and finished with cement

mortar 1:3. But necessity of such finishing must be exceptional

and the total not exceed 1% on an average.

11. Concrete which is partially hardened shall not be tempered or re-

mixed but shall be disposed off as desirable.

12. Sampling and testing shall be done as per I.S. 456 (latest version).

13. All labour, materials use of equipment, tools and plant, installing

and removal of scaffolding, false work and forms and branching

necessary for the satisfactory completion of item.

14. Compensation for injury to persons and damage to work or

property.

15. Establishment of site laboratory.

17.2 Testing-

Cubes of 15 cm x 15 cm x 15 cm size shall be cast on the first day and

tested for compression at 7 and 28 days. Later on, if the Engineer so

directs, frequency of sampling be mutually agreed up on and approved

as per quantum received on site.


324

17.3 Mode of measurement and payment-

The contract rate shall be for a unit of one cubic metre of concrete. The

concrete shall be measured for its length, breadth and depth limiting

dimensions to those specified on the drawings or as ordered by the

Engineer. No deduction shall be made for reinforcing steel bars and

anchor bars. No deduction shall be made for embedded structural

steel, if there combined sectional area is less than 500 sq.cm. Holes for

anchor shall not be deducted nor payment made for grouting these

holes. The sizes of R.C.C. members assumed in the estimate or

preliminary drawings are likely to be changed. The contractor shall not

be entitled to extra claims due to such changes.

17.4 READY – MIXED CONCRETE :

Ready Mixed concrete may be manufactured in a central automatic

weigh Batching plant and transporting to the job in agitating transit

mixers.

The maximum size of coarse aggregate shall be limited to one third of

the smallest inside diameter of the hose or pipe used for pumping.

Provision shall be made for elimination over-sized particle by screening

or by careful selection of aggregates. To obtain proper gradation it

may be necessary to combine and blend certain fractional sizes of

aggregates. Uniformity of gradation throughout the entire job shall be

maintained.

The quantity of coarse aggregate shall be such that the concrete can be

pumped, compacted and finished without difficulty.

Fine Aggregates

The gradation of fine aggregates shall be such that 15 to 30 percent

should pass the 0.30 mm screen and 5 to 10 percent should pass 0.15


325

mm screen so as to obtain a pumpable concrete. Sands which are

deficient in either of these two size should be blended with selected

finer sands to produce these desired percentages. With this gradation

sands having a fineness modulus between 2.4 and 2.8 are generally

satisfactory. However, for uniformity the fineness modulus of the sand

should not vary more than 0.2 from the average value used in

proportioning.

Water, Admixture and slump:

The amount of water required for project concrete consistency shall take

into account the rate of mixing, length of haul, time of unloading and

ambient temperature conditions.

Additions of water to compensate for slump loss should not be restored

to nor should the design maximum water-cement ratio be exceeded.

Additional dose of be retarder be used to compensate the loss of slump

at contractor’s cost. Retempering water shall not be allowed to be

added to mixed batches to obtain desired slump.

Transportation:

The method of transportation used should efficiently deliver the

concrete to the point of placement without significantly altering its

desired properties with regard to water – cement ratio, slump, and

homogeneity.

The revolving – drum truck bodies of approved make shall be used for

transportation the concrete. The number of revolutions at mixing speed,

during transportation and prior to discharge shall be specified and

agreed upon. Reliable counters shall be used on revolving drum truck

units. Standard mixer uniformity tests, conforming to ASTM Standards C


326

94-69 “Standard Specification for Ready mix Concrete” shall be carried

out to determine whether mixing is being accomplished satisfactorily.

Field Control: -

Sampling at both truck discharge and point of final placement shall be

employed to determine if any changes in the slump and other

significant mix characteristics occur. However, for determining strength

of concrete, cubes shall be taken from the placement end of line.

Planning:

Proper planning of concrete supply, pump locations, line layout placing

sequence, and the entire pumping operation shall be made and got

approved. The pump should be as near the placing are as practicable,

and the entire surrounding area shall have adequate bearing strength

to support concrete delivery pipes. Lines from pumps to placing area

should be laid out with a minimum of bends. For large placing areas,

alternate lines should be installed for rapid connection when required.

Standby power and pumping equipment should be provided to replace

initial equipment, should breakdown occur.

The placing rate should be estimate so that concrete can be ordered at

an appropriate delivery rate.

The placing rate should be estimate so that concrete can be ordered at

an appropriate delivery rate.

Time in transport shall be as per IS: 4926-2003.

Information to be supplied by the RMC producer shall be as per Clause

No.8 of IS: 4926-2003.

Information to be included in the delivery ticket to the purchaser shall

be as per Annexure “G” of IS: 4926-2003.


327

Material testing reports shall invariably be submitting by the producer

as per Annexure “B” of IS: 4926-2003

Time in transport i.e. the time of loading/mixing water to the time of

discharge from the truck mixer shall not be more than 2 hrs.

18.0 Disposal of surplus excavated excess materials upto specified lead

including loading, transporting, unloading, stacking, spreading,

laying in layers and leveling etc. complete.

18.1 Scope of work and items to include :

All labour, material and equipment required for loading,

conveyance, unloading, stacking or spreading the materials for

satisfactory completion of the item and the incidental charges,

royalties, compensations or damages required to be paid.

18.2 Mode of measurement and payment :

The distance of conveyance shall be measured from the centre of

gravity of the bulk of excavation, to the centre of gravity of the finished

stacks or spreading of disposal. This distance shall be the shortest

practicable route between the above mentioned two centers of gravity

as decided by the Engineer although the actual route taken by the

contractor to lead out the materials may be longer. The shortest

practicable route which can be used by the contractor or which the

department could have used itself, whichever is shorter. The extra lead

is obtained by deducting the initial free lead of 50 meters from the

above. The lead shall be measured in units of 100 m. In the former

case 25 m. or above shall be taken as one unit and less than 25 m.

shall be ignored. In the latter case 50 m. or above shall be taken as

one unit and less than 50 m. shall be ignored. All lifts are included in

the rate.


328

The contract rate shall be for one cubic meter of materials conveyed to

the placed disposal.

Measurements shall normally be taken by leveling sections and chaining

distances between them.


shown on the drawings or those ordered by the Engineer in writing. The

dimensions shall be recorded correct upto two places of decimals of a

metre. The sectional areas shall be worked out correct upto two places

of decimals of a Sq. mtr. The quantity shall be worked out correct upto

two places of decimals of a cu.m. by the average end area method.


Date : Date :


329

Checklist for Ready Mix Concrete

Supply of Concrete (RMC) Name of Work : C.A.No. : Name of Contractor/Client : Sr. No.

Description Detail Information

1. Name of RMC manufacturer with plant address & telephone nos.

2. Name of Plant In Charge with qualification & Experience

3. Date of commissioning of RMC plant

4. RMC Plant details

a) Capacity of plant Design

Actual Output

b) Whether plant fully automatic/Semi automatic

c) Conveyor belt for loading aggregate

d) Aggregate bin with various compartments for different aggregate

e) Mixer type

f) No. of Transit Mixers with capacity

g) No. of pumps

h) No. of placer boom

i) i) Separate silos with capacity for Cement

ii) Fly ash

j) Water storage arrangement

k) Plasticizer arrangement


330

Sr. No.


l) Arrangement for alternate power supply

m) Arrangement for maintenance of P & M.

n) Storage capacity for raw materials

o) Arrangement for curing tank & frequency of changing water

p) Calibration frequency of plant with traceability (every three months)

q) Whether you observe the accuracy/sensitivity of measuring equipments within the limits of IS 4926:2003

r) Details of Calibration frequency of various testing equipments with traceability & its record

5. Quantity of RMC manufactured daily

M20

M25

M30

M35

6. Source of materials

Cement-whether bulk supply

Coarse aggregate

Fine aggregate – Sand

Crushed Sand

Water

Chemical Admixture

Mineral Admixture (Fly ash)


331

Sr. No.


7. Details of quality control testing &

records of various constituents

materials

A) Cement (IS 8112, IS 12269)

Whether MTC

(weekwise) available

Fineness

Soundness

IST & FST

Consistency

Compressive strength of cement mortar cubes-no. of cubes

Chemical tests

Physical & chemical testing at external lab. & its frequency

B) Coarse Aggregate (IS 383 : 1970)

Gradation

Specific gravity

Flakiness & elongation Index

Impact value/Crushing value/ Abrasion value

Soundness

Alkali Aggregate reactivity test

C) Fine aggregates (IS 383 : 1970)

Gradation

Specific gravity

Determination of clay, fine silts, & fines dust

Free moisture content


332

Sr. No.


Soundness

Water absorption

Organic impurities

D) Admixture (IS 9103 : 1999)

Whether MTC is available for every

batch & brand

Dry Material content

pH value

Relative Density

Compatibility

Ash content

Chloride ion content

Performance test for slump retention &

compressive strength test at 24hr. on

control mix.

Periodical testing at external lab. For crosscheck

E) Fly ash

(IS 3812 : 2003)

Whether MTC available

Physical properties

1. Specific surface

2. Residue on 45 micron IS sieve

3. Lime reactivity

4. Comp. Strength

5. Soundness

Chemical properties chemical Analysis


333

Sr. No.


Periodical testing at external lab. For

crosscheck

F) Water (IS 456 : 2000, IS 3025 : 1964)

pH value

Sulphates

Chlorides

Organic matter

Inorganic matter

Suspended matter

Periodical testing at external lab. For

crosscheck

G) Concrete (RMC)

a) Mix Design & Trial Mixes

a. Method of design

(whether as per IS or any other)

b. Whether it is as per requirement of client or your own

b) Daily check on preparation of starting

slips for each of grades based on adjustments of moisture content or

water absorption (at 7,11,15,19 hr.) as

per schedule

c) Analysis of fresh concrete Mix as per IS

1199 – 1959.

d) Temperature of the fresh Concrete Mix

e) Slump at the Plant

f) Check for Density for each grade


334

Sr. No.


g) Cube Comprehensive Strength &

Acceptability Records of tests

h) Permeability apparatus

i) NDT equipments & co-relation with

cube compressive strength

j) Cement content test

k) Chemical analysis of concrete samples

l) Statistical analysis of test results & modification to the mix proportion based on standard deviation of plant

m) Special Precautions taken

a. During Rainy season

b. During Hot season

8. Technical staff available at plant with qualification & experience

9. Technical Staff to accompany transit mixer with qualification & experience

10. Time of availability of RMC supply

11. Delivery tickets as per Annex G (Cl.9.4) of IS 4926-2003

(Alongwith every load/transit mixer)

12. Test frequency for all ingredients of concrete-whether as per IS 4926-2003

13. Any incidents of failure in quality supplied

14. Any incidents of failure in timely supply

15. Details of works where RMC used

Major Clients

16. Any other information

17. Third Party Inspection Name of agency,

Frequency & Report.


335

Sr. No.


18. Monitoring of Ready mixed Concrete as per IS 4926:2003

a) If more than one admixture is used, confirmation of their compatibility

b) IST & FST of concrete when admixture is used at adopted dosage (As per IS 8142)

c) Time of transportation (Shall not exceed 2 hours for normal case.)

d) Frequency of Compressive strength (One sample (3 specimens) for every 50 Cum or 50 batches whichever is greater).

e) Any additional compliance criteria shall be declared to the producer by the purchaser prior to supply & shall be mutually agreed upon.

f) The action to be taken in case of non-compliance shall be declared & mutually agreed upon.

Also enclosed herewith Annex –I i.e. Material Testing requirements as per IS 4926 : 2003.

Signature of RMC Supplier M/s. Name

Checked by

Executive Engineer ( )


336

Annexure – I MATERIAL TESTING REQUIREMENTS AGGREGATES

Sr.

No.

Aggregate Property /

Parameter

Type of

Aggregate Test Frequency

Requirements for

normal monitoring

1. Grading i. Sand /Fine

aggregate

ii. Coarse

aggregate

Last 8 results

conform to IS 383

2. Particle density Over

dry Saturates surface

dry Apparent

All types 3 Monthly Last 4 results

+0.04

3. Absorption All types 3 Monthly Last 4 results +

0.04%

4. Bulk density Loose

Compacted

All types

All types

Monthly

Monthly

Last 4 results

+75 Kg. /Cum

5. Fines (Silt) content Sand Coarse Weekly

Monthly

Last 10 results

<75% maximum

allowed.

6. Aggregate Impact Value

Coarse Once per source / every changes of source

______

7. 10% fines Coarse Yearly ______

______

8. Flakiness Coarse Monthly Last 3 results

conforms to

standard.


337

Sr.

No.

Aggregate Property /

Parameter

Type of

Aggregate Test Frequency

Requirements for

normal monitoring

9. Chloride content All types 6 Monthly Last 3 results

<0.01%

10. Aggregate abrasion

value ( Los Angeles

Method)

Coarse Yearly / Source

change

______

11. Soundness Fine & Coarse Yearly / Source

change

______

12. Potential Alkali

aggregate reactivity

including petrography.

Fine & Coarse 5 Yearly /

Source change

______

All other material cement, water, admixtures shall be tested as per requirement of

IS 456 : 2000.

Signature of Tenderer

Date.:

Chief Engineer & General manager(Tech)

Date.:


338

LIST OF APPROVED MAKES AND

BRANDS OF MATERIALS The Contractor should distinctly understand that it will not be their prerogative to

insist on using a particular make/brand from amongst the approved ones. The final

selection will have to be done with the approval of Engineer. The provision will apply

where contractors do not state their choice of materials while submitting tenders. The

list given below is only indicative and not restricted to brands mentioned. Other

equipment brands may be approved at the discretion of the Engineer.

Sr. No.

Material Make/Brand

1. Construction Chemicals Flowcon 21, M/S BASF Construction Chemicals (I) Pvt.

Ltd., Sunanda Speciality Coating Pvt. Ltd., Pidilite

Industries Ltd., M/s. Tulsi Chemicals & Paints Pvt. Ltd.

2. Cement (43 Grade/

53 Grade OPC/PPC)

M/s The India Cement Ltd., M/s Ultratech Cement,

M/s Heidelberg Cement (I) Ltd., M/s Sanghi Industries

Limited, M/s Binani Cement Ltd.,

3. TMT/HYSD Steel M/s. Shyam Steel Industries Ltd., M/s. Jai Balaji

Industries Ltd.

4. Bricks Ordinary clay bricks of any bran conforming to

IS: 1877 with minimum crushing strength of

40 Kg/Sq.Cm. and water absorption percentage

restricted to 25% for bricks used in panel walls and

20% for bricks used in load bearing walls.

5. R.C.C. NP-2 Class Indian Hume Pipes, Premier Prestressed Concrete

Product Pvt. Ltd., Vaitarna Cement Pipe Industries,

Patel Hume Pipes, Bharat Metal Pressing Industries.


Date : Date :

Price : Rs.10,000/- (Rupees Ten Thousand only) (Non refundable)...

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