Office of the Executive Engineer, P.H.E.D., District Rural...

E:\H Drive\2015-16\NIT G Schedule 2015-16\Long\13-21\14 (Bhurasar Diggi S.B.R) ok d\NIT 14 (15-16).doc Page No.1

Office of the Executive Engineer, P.H.E.D., District Rural Division-IInd, Bikaner

Tender Notice No. : 14/2015-16

Name of Work : lhekUr {ks= fodkl dk;ZØe ds rgr~ lhekUr {ks= fodkl dk;ZØe ds rgr~ lhekUr {ks= fodkl dk;ZØe ds rgr~ lhekUr {ks= fodkl dk;ZØe ds rgr~

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Cost of Tender Form : Rs. 500.00

Issued to : ---------------------------------------- ---------------------------------------- ---------------------- Estimated Cost : Rs. 6.50 Lacs.

Time allowed for completion : 2 Month

Last date of selling tender : 10.08.2015 upto 3.00 PM

Date & Time of receipt of tender : 12.08.2015 upto 3.00 PM

Date & Time of opening of tender : 12.08.2015 upto 3.30 PM

Earnest Money : Rs. 13,000.00 (2 %)

Executive Engineer PHED, Distt. (R) Dn. II,

Bikaner


Office of the Executive Engineer, P.H.E.D., District Rural Division-IInd, Bikaner

Tender Notice No. : 14/2015-16

Name of Work : lhekUr {ks= fodkl dk;ZØe ds rgr~ chdkusj ftys dh lhekUr {ks= fodkl dk;ZØe ds rgr~ chdkusj ftys dh lhekUr {ks= fodkl dk;ZØe ds rgr~ chdkusj ftys dh lhekUr {ks= fodkl dk;ZØe ds rgr~ chdkusj ftys dh xzke iapk;r cjlyiqj ds xzke Hkwjklj fMXxxzke iapk;r cjlyiqj ds xzke Hkwjklj fMXxxzke iapk;r cjlyiqj ds xzke Hkwjklj fMXxxzke iapk;r cjlyiqj ds xzke Hkwjklj fMXxh gsrq dSuky h gsrq dSuky h gsrq dSuky h gsrq dSuky ds lehi fLop :e dk fuekZ.k dk;ZAds lehi fLop :e dk fuekZ.k dk;ZAds lehi fLop :e dk fuekZ.k dk;ZAds lehi fLop :e dk fuekZ.k dk;ZA

ABSTRACT OF COST

Part Particular Amount

A. Construction of Sump Well 155439.70

B. Construction of Switch Room 165761.18

C. Procurement and installation of pump sets 112699.00

D. Providing laying and jointing of pipe line 42100.00

Total : 475999.88

I/We offer…………..% Above/Below On “G”-Schedule

Signature of contractor Executive Engineer PHED District (R) Dn.II

Bikaner


"G"-Schedule

NIT No.-14/15-16

PART-A Name of Work : Construction of RCC Sump Well

Rates are based on PWD BSR 2013 SN BSR

Ref. Particular Unit Qty. Rate Amount

1 PWD BSR B-1.6

Earth work in excavation by mechanical means (Hydraulic excavator )/ manual means over areas (exceeding 30cm in depth. 1.5m in width as well as 10 sqm on plan) including disposal of excavated earth, lead upto 50m and all lift upto 1.5m, disposed earth to be levelled and neatly dressed: All kinds of soil

Cum 105.00 150.00 15750.00

2 PWD BSR B-1.10.1

Add extra over item No. 1.8 and 1.9 for every additional lift of 1.5 Mtr. or part thereof : In all kind of soils.

Cum 70.00 15.00 1050.00

3 Add extra item no.1 lift upto 3 M. to 4.5 M

Cum 35.00 15.00 525.00

4 PWD BSR B-3.1.3

Providing and laying in position cement concrete including curing compaction etc. of specified grade excluding the cost of centering and shuttering - All up to plinth level M10 grade Nominal Mix 1: 3: 6 (1 cement : 3 coarse sand : 6 graded stone aggregate 20mm nominal size).

Cum 3.50 3022.00 10577.00

5 PWD BSR B-4.1

Providing and laying in position specified grade of cement concrete for all RCC structural elements upto plinth level including curing, compaction, finishing with rendering in cement sand mortar 1:3 (1 cement: 3 coarse sand) and making good the joints and cost of plasticizer( if required) excluding the cost of centering, shuttering and reinforcement. M20 grade Nominal Mix/Design Mix

Cum 4.50 4053.00 18238.50

6 PWD BSR B-4.2

Providing and laying in position specified grade of cement concrete for RCC structural elements upto floor five level including curing, compaction, finishing with rendering in cement sand mortar 1:3 (1 cement: 3 coarse sand) and making good the joints and cost of plasticizer (if required ) excluding the cost of centering, shuttering and reinforcement for Walls (any thickness) including attached pilasters, buttresses, plinth and string courses, fillets, columns, pillars, piers, abutments, posts and struts etc. M20 grade Nominal Mix/Design Mix

Cum 7.90 4168.00 32927.20


7 PWD BSR B-4.10.2

Providing and fabricating reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding (including cost of binding wire) all complete up to floor three level. Hot rolled deformed bars

Kg 700.00 61.00 42700.00

8 PWD BSR B-4.9.10

Centering & shuttering with plywood or steel sheets including strutting, propping bracing both ways with steel props and removal of formwork for upto floor five level for : Deduct for using wooden vertical member instead of steel props

Sqm 115.00 292.80 33672.00

Total : 155439.70

Signature of Contractor with seal Executive Engineer PHED, District (R) Dn.II Bikaner


"G"-Schedule

NIT No.-14/15-16

PART-B Name of Work : Construction of Switch Board Room

Rates are based on PWD BSR 2013

SN BSR Ref.

Particular Unit Qty. Rate Amount

1 B- 1.6 E/W in excavation in foundation trenches or drain including dressing of sides & ramming of bottom lift upto 1.5m including taking out the excavation soil and depositing and refilling of jhiri with watering and ramming & disposal of surplus soil as directed within lead 50 m in all kind soil

Cum. 12.00 150.00 1800.00

2 B- 3.1.3 Providing and laying cement concrete 1 cement : 3 sand : 6 aggregate mix, including curing compaction etc; complete using stone aggregate 40mm nominal size (hand broken) in foundation plinth excluding the cost of shuttering. .

Cum. 5.00 3020.00 15100.00

3 B- 5.1.4 Brick masonry in foundation & Plinth with brick of class designation 75 in cement mortar 1 : 6 (1 cement : 6 course sand).

Cum. 8.00 3486.00 27888.00

4 B- 5.2.3 Brick masonry in super structure upto 4.5 m height above P.L. with brick of class designation 75 in cement mortar 1 : 6

Cum. 13.50 4030.00 54405.00

5 B- 6.17.1

Supplying & fixing stone lintls/bed plate of approval quarry, rough dressed in C.M. 1 : 4 upto 15 cms thick

Cum. 0.42 11411.00 4792.62

6 B- 10.1.3

Stone slab roofing on ground floor with fire grained stone slab from approved quarry (Soorsagar, Jodhpur) including filling of joints of parapet and slab on both sides in C.M. 1 : 4 with top 15 c.m. thick lime conc. (40 : 100) tarrecing (as per bikaner practice) includingsandle ralthan, hemp & Methi well tapping finished smooth, polished surface in all respect in time surkhu mortar 1 : 2 with nail & lime bottom (Gola 75 cm x 75 cm) & sandla etc; complete finished for span above 2.5 mtr. to 3.30 mtr. with ceiling polnting in cm (1:3)

Sqm. 9.85 2149.00 21167.65

7 B-6.16.4

S/F in walls machine cut and polished stone shelves tands and sills in CM 1:3 with machine cut edge Kota stone 25 to 30mm thick

Sqm. 1.54 567.00 873.18

8 B-6.18.1

Providing & fixing 30 to 40mm thick stone chajja in C.S.M. 1:4, including making gola at junction with wall in cement conc. M-15 grade (1:2:4) drip course pointing both faces in C.M. 1 : 4 with an admixure of pigment matching the stone shade

Sqm. 4.00 394.00 1576.00


9 B-13.20.2

Providing & fixing M.S. fan clamps of standard shape of size of size in RCC slab/stone slab roofing including cutting chase sand making good position approval portion of clamp complete in new roof.

No. 1.00 75.00 75.00

10 B-9.5 Providing & fixing T iron/angle iron frame for doors, windows & ventilators of M.S. Tee or angle section joints mitroous & welding with 15 x 3mm lugs, 10 cm long embeded in cement concrete block 15 x 15 x 10 cm of 1:3:6 mix with W. plugs & screw of nuts as required include fixing of necessary butt hings and screws and applying a priming coat of approved steel primer.

Kg. 42.00 88.00 3696.00

11 B-9.17.2

Providing & fixing ms sheet single leaf door shutters in angle iron frame 35x35x5 mm suitablly diagonally braced with 25x3mm flat ironabove and below lock rail of size 50x5 mm beading extra includingall fittings, as per direction of engg. incharge but excluding coes of chokhats including two coats of anti corrastie red oxide primer paint. MS sheet 20 SWG

Sqm. 2.00 1620.00 3240.00

12 B-9.18.4

Providing & fixing steel glazed doors, windows and ventilators with shutters of standred rolled steel section joint mitred and welded with steel 13x3mm lugs 10 Cm. long embedded in cement concrete blocks 15x10x10 Cm. of 1:2:4 (1-Cement:2-coarse sand:4-graded stone aggregate 20 mm nominal size) or with wooden plugs and screws or rawl plugs and screws or with fixing clips or with bolts and nuts as required, including providing and fixing of plain glass panes 4mm thick with copper glazing clips and special metal-sash putty of approved make, or metal beading with screws complete including priming coat of approved steel primer, excluding the cost of metal beading and other fittings except necessary hinges of pivots steel handles and peg stay etc. as required. Patially fixed and partially openable fixed area not exceed 33%

Sqm. 1.08 2150.00 2322.00

13 B-9.21.1

Supplying & fixing fixed wire gauge of 14 mesh x 24 gauge to metal frame of rolled section by metal beading 20 x 03mm with suitable screws not exceeding 150mm distance.

Sqm. 1.08 596.00 643.68

14 B-9.22 Providing & fixing square bars or other flats welded to window, ventilator etc.

Kg. 11.00 76.00 836.00

15 B-11.3.1

40mm thick C.C. flooring grade 1 : 2 : 4 rounding of edge etc; but excluding the cost of nosing of steps etc; complete with 20 mm thick nominal size aggregate (without strips)

Sqm. 9.47 254.00 2405.38


16 B-12.3.1

Cement plaster in cement sand mortar 1:6 including racking of jointe etc; complete fine finished 20mmm thick.

Sqm. 105.00 160.00 16800.00

17 B-12.30.1

White washing with lime on new work to give an even shade including all scaffolding three or more coat.

Sqm. 50.00 11.00 550.00

18 B-12.39.2

Finishing wall with water proofing cement paint of approved brand and manufacture and or required shade to give an even shade including all scaffolding: New work (Two or more coats applied @ 3.84 kg/10 sqm).

Sqm. 75.00 39.00 2925.00

19 B-12.45.1

Painting with synthetic enamel paint of approved brand and manufacture to give an even shade : Two or more coats on new work.

Sqm. 7.00 49.00 343.00

20 B-9.10 Providing and fixing steel gate grating and grills made of angles, tees, square bars or other flats black pipe with holdfast and fittings complete as per design and drawing including cutting welding and fabrication with priming coat of red oxide.

Kg. 25.00 91.00 2275.00

21 Elect. BSR

Providing and fixing 9mm thick teak ply for panel board including making holes for swiches etc; with brass washer & screws complete as required, bakelite sheet 9mm thick.

Sqm. 1.17 1151.00 1346.67

22 Elect. BSR

Wiring of light point/fan point/cxhaust fan point/ call bell point with 1.5 sq. mm FRPVC inculated unsheathed flixiablecopper conductor 1.1 KV gradeand 1.5 sq.mm FRPVC insulated unsheathed flexable copper earth conductor 1.1 Kv grade (IS:694) of approved makein surface/recessed ISI markedmedium duty PVC conduit & it's accessories,round tiles18 SWG MS box with earth terminal secrewless cage connectors for netural looping in switch board & falce celling point 6A switch 3.0 mm thick phenolic laminated sheet xinc plated brassscrews cup wahers making connections testing etc. as reqyuired in PVC conduit group 2

a Short point (upto 3 m)

Per Point

2.00 119.00 238.00

b Medium Point (upto 6m)

Per Point

2.00 211.00 422.00


23 Elect. BSR

Wiring of 3 pin 5 amp light plug point with 1.5 sq. mm FRPVC inculated unsheathed flixiable copper conductor 1.1 KV gradeand 1.5 sq.mm FRPVC insulated unsheathed flexable copper earth conductor 1.1 Kv grade (IS:694) of approved makein surface/recessed ISI marked medium duty PVC conduit & it's accessories,round tiles18 SWG MS box with earth terminal secrew less cage connectors for netural looping in switch board & falce celling point 6A switch 3.0 mm thick phenolic laminated sheet xinc plated brassscrews cup wahers making connections testing etc. as reqyuired in PVC conduit group 2 on board

Per Point

1.00 41.00 41.00

Total : 165761.18



"G"-Schedule

NIT No.-14/15-16

PART-C Name of Work : Supply & Installation of pumping machinery

SN Particular Unit Qty. Rate Amount

1 Supply & Installation of electric driven 3 phase monoblock pump sets confirming to IS:9079 of make Kirloskar/Jyoti/Crompon including construction of cement concreting foundation block in 1:2:4, providing and fixing foundation bolts and base plate with perfect alingnment & testing of complete system but excluding the suction & delivery pipe. 800 LPM, 30 M. head - 10 HP

Each 2.00 25667.00 51334.00

2 Supply & Fixing of electric control pannel in masonry wall suitable for 2 nos. electric driven pump sets (Upto 15.0 HP each) comprising MCCB, MCB, automatic star delta stater, ampere meter, volt meter, phase preventer, phase indicators, lighting arrangement etc complete suitable for three phase pump set All these equipments shall be fixed on 12mm thick backalite sheet which fixed on MS angle frame of size 1800 x 1200 i.e. made of angle iron of size 50x50x6mm including making good the surface of wall.

Nos. 1.00 33465.00 33465.00

3 Fabrication, supply of flanged/ plain ended MS pipe made from MS sheet strips of relevant IS specification of approved thickness by welding, lowering, laying, aligning, fixing in position at all level/ depths in trenches complete (excluding flanged jointing wherever required) including all material, labour, testing and commissioning along with pipe line as per Technical Specifications and as per direction of Engineer. MS pipe specials upto 600mm dia (with minimum 5mm thickness sheet)

Kg. 150.00 86.00 12900.00

4 S&F PVC insulated PVC sheated (heavy Duty) Armoured electric cable with aluminium conductor for working voltage 1100 Volt to IS :7098 PART-I applicable 3.5 core 25 Sqmm

Mtr. 100.00 150.00 15000.00

Total : 112699.00



"G"-Schedule

NIT-14/15-16

PART-D Name of Work : Providing, laying and jointing of pipe line

SN Particular Unit Qty. Rate Amount

1 Excavating trenches of required width for pipe cable etc. including excavation for sockets and dressing of sides, ramming of bottoms, depth upto 1.5 Mtr. including taking out the excavated soil and then returning the soil as required in layers not exceeding 20 cm. depth including consildating each deposited layer by ramming watering etc. and disposal of surplus excavated soil as directed within a lead of 50 Mtr. All Kind of soil pie cable etc. exceeding 90mm dia

mtr 100.00 103.00 10300.00

2 Providing, laying and jointing of uPVC with rubber ring joints in assorted length with uPVC specials etc. and interconnection with existing / new pipe line as per specification including preparation of bed property carting to site with all lead, cutting of pipes, sectional testing of pipe line as per BIS specification, submitting completion drawing as per specification (Excluding earth work). 140mm dia uPVC

Mtr 100.00 318.00 31800.00

Total : 42100.00



Office of the Executive Engineer, P.H.E.D., Distt.(R) Dn.II, Bikaner Tender Notice No. : 14/2015-16

Name of Work : lhekUr {ks= fodkl dk;ZØe ds rgr~ chdkusj ftys lhekUr {ks= fodkl dk;ZØe ds rgr~ chdkusj ftys lhekUr {ks= fodkl dk;ZØe ds rgr~ chdkusj ftys lhekUr {ks= fodkl dk;ZØe ds rgr~ chdkusj ftys

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SPECIFICATIONS

TECHNICAL SPECIFICATION OF UPVC Pipes

Scope

The section of the tender document specifies the required properties of the pipes made of un plasticized polyvinyl chloride (UPVC) with socket(s) suitable for electrometric sealing ring type joints for conveyance of drinking water under pressure. The pipes are intended to be used for water mains with ambient atmospheric temperature reaching upto 50o C and soil surface temperature rising to more than 65o C. The stipulations given in this document for UPVC pipe when are not covered by any other Material

The material from which the pipes are made shall consist substantially of un plasticized polyvinyl chloride confirmed to ISI to which may be added actives that are absolutely needed to facilitate the manufacture of the polymer and the production of sound, durable pipes of good surfaced, finish, mechanical strength and capacity. The total quantity of additives like plasticizers, stabilizers, lubricants and filter shall not exceed more than 6.0 to 8.0 %. The density of UPVC pipe shall be 1.39 to 1.44 g/cm3. The addition of the manufacturer’s own rework material comply to clause 4.2 of IS 4985 PVC Resin of suspension grade K- 66 1 shall be used for extrusion of UPVC pipe. Classification

The pressure rating of pipes shall be of class – 3 in accordance with IS:4985 with a maximum continuous working pressure at 27o C of 6 and 10 kg/ cm3 respectively. This working pressure shall be downgraded for ambient underground soil temperature of 45o C as per the Fig-1 given in IS: 4985 for design purposes. Dimensions of the pipes and the sockets

The dimensions of pipes shall comply to the clauses given in IS: 4985. The tolerance of outside diameter and wall thickness of pipes shall be as per Table-1 given in IS: 4985 The minimum depth of engagement ( U ) of single sockets with electrometric seating ring type joint shall be in accordance with ISO: 2045 – 1988 ( E ).


The pipes shall be supplied in straight lengths of 6 m with tolerance of + 20 mm and –0 mm. The effective length of socket pipe shall be considered as shown in Figure – 2 of IS: 4985. Appearance and colour

The internal and external surface of pipes and fittings shall be smooth, clean and free from grooving, cavities and other surface defects. The material shall not contain visible impurities. The end of the pipes shall be cut clearly and squire to the axis of the pipes. The spigot end of the pipes shall be chamfered in accordance with Table 2.12.2 and Drawing No. MS/TD/001. The color of the pipes shall be dark grey.

Mechanical properties

Hydrostatic strength of the pipes

The pipes are subjected to internal hydrostatic pressure in according with IS: 12235- 1986 ( Part-8 ) shall not burst during the prescribed test duration. The temperature duration of test and induced internal stress shall conform to the parameters given below:

S.No Test Temperature (oC)

Min. duration

Induced stress (Mpa)

Requirement

1 Type test 60 1000 10 No Failure

2 Acceptance test 27 1 36 No Failure

Supply of pipes, marking

The pipes shall be supplied with one end plain with chamfer and other end socket suitable for electrometric seating ring type joints in accordance with IS: 4985 and in accordance with IS: 4985 and in accordance with this requirement Each piece shall be supplied along with a rubber pipe suitable for socket in electrometric sealing ring type joints. Each pipe shall be clearly marked in color at intervals of not more than 3 m as indicated below:-

• Manufacturer’s name or trade mark

• Outside diameter in mm

• Class of pipe and pressure rating

• Month and year of manufacturing

• Length of pipe

• Marking of insert depth in spigot

• PHED – MB

• ISI marking To distinguish class – 3 and class-4 pipes more easily, sockets of all class – 3 and class-4 pipes shall be marked with 5 cm wide band by green and yellow colure respectively.

Tests and conformity criteria.

Testing of raw material


The following in house tests shall be carried out on the raw material

• Grade ( K – values )

• Particle size distribution

• Bulk density of resin

• Bulk density of compound

Quality control , tests and lot size

All u PVC pipes of the same size and class manufactured on a particular machine shall be considered as a lot for quality control inspection. Hower, the maximum size of a lot shall not be more than 1000 Pipes The sampling procedure and scale of sampling for visual inspection and dimensional requirements shall be as per Table-5 given in Appendix – A of IS: 4985. The sample pipes from a lot shall be inspected for workmanship to ensure that pipes is homogeneous through out, free from voids, cracks, inclusions and other defects and uniform in color. The pipes shall be inspected for surface finish. Quality socket dimensions and length to ensure that pipes are free from sratch, bubbles. Over shape and are of correct dimensions and length. The jointing surface of pies and spigot and internal bell of the socket shall also be inspected to ensure that they are free from any kind of damage and imperfections. The measurement of the outside diameter and well thickness of the pipes shall be done in accordance with Part – 1 and part – 2 of IS: 12235

Acceptance test

The pipes having satisfied for quality control requirements shall be selected for acceptance. The following acceptance tests shall be conducted in accordance with IS: 4985 and IS 12235.

• Revision test.

• Stress relief test.

• Impact strength.

• Internal hydrostatic pressure test.

• Opacity

Type test

The following pipe test shall be conducted in accordance with IS: 4985 and IS: 12235.

• Influence on water quality ( Effect on water )

• Long tgerm hydrostatic pressure test ( 1000 Hours )

• VCM test.


Specifications for Providing, Laying, jointing, testing and sectional testing of

pipelines

1. GENERAL

The contractor will inspect the route along which the pipeline is proposed to be laid. The pipe alignment is duly marked on the field by demarcation pillars. However efforts shall be made by the contractor to make minor deviations from the marked alignment so as to keep the pipe alignment as straight as possible and to avoid damage of public and private properties along the alignment. The alignment of pipe line and location of specials & chambers may be changed at site in co-ordination and with prior approval of the Engineer In Charge. The final alignment on which the pipeline shall be laid shall be marked in field and got approved from the Engineer in Charge or his representative.

Wherever there is need for deviation, it should be done with the use of necessary specials or by deflection in pipe joints (limited to 75% of permissible deflection as per relevant standards). The alignment as proposed should be marked on ground with a line of white chalk and got approved from Engineer In-Charge. The position of fittings, valves, shall be as per directions of engineer-in-charge.

2. STANDARDS Except otherwise specified in this technical specification, the Indian Standards and Codes of Practice in their latest version, National Building code, PWD specification of the state of Rajasthan and Manual of water supply of GOI shall be adhered to for the supply, handling, laying, installation, and site testing of all material and works. The laying of pipeline shall be done in confirmations to the following standards: IS 6530-1972 for uPVC pipe lines. 3 .TOOLS AND EQUIPMENT The contractor has to provide required tools and equipment required for the timely, efficient and professional implementation of the work as specified in the time schedule given in the special conditions of the contract. On demand he shall provide to the Engineer in Charge a detailed list of tools and equipment available. If in the opinion of the Engineer in Charge the progress or the quality of the work cannot be guaranteed by the available quantity and type of tools and equipment the contractor has to provide additional ones to the satisfaction of the Engineer in Charge. The Contractor will always have a surveyor and leveling instrument on site. 4. EARTH WORK

The Contractor shall furnish all tools, plant, instruments, qualified supervisory personnel, labour, materials, any temporary works, consumables, any and everything necessary, whether or not such items are specifically stated herein for completion of the work in accordance with the Departments Requirements.

The excavation shall be carried out to correct lines and levels. This shall also include, where required, proper shoring to maintain excavations and also the furnishing, erecting and maintaining of substantial barricades around excavated areas and warning lamps at night.


Excavated material shall be dumped in regular heaps, bunds, riprap with regular slopes within the lead specified and leveling the same so as to provide natural drainage. Rock/soil excavated shall be stacked properly as approved by the Engineer in Charge. As a rule, all softer material shall be laid along the center of heaps, the harder and more weather resisting materials forming the casing on the sides and the top. Rock shall be stacked separately. Topsoil shall be stock piled separately for later re-use. 5. CLEARING

The area to be excavated/filled shall be cleared of fences, trees, plants, logs, stumps, bush, vegetation, rubbish, slush, etc. and other objectionable matter. If any roots or stumps of trees are encountered during excavation, they shall also be removed. The material so removed shall be disposed off as approved by the Engineer in Charge. Where earth fill is intended, the area shall be stripped of all loose/ soft patches, top soil containing objectionable matter/ materials before fill commences.

6. LAYING AND JOINTING OF PIPES The laying of uPVC pipes shall be as per the provisions of IS 6350, however the specific references given herein shall prevail on the provisions of the standards. Pipes should be lowered into the trench with tackle suitable for the weight of pipes. For smaller sizes, up to 200 mm nominal bore, the pipe may be lowered by the use of ropes but for heavier pipes suitable mechanical equipment have to be used. All construction debris should be cleared from the inside of the pipe either before or just after a joint is made. This is done by passing a pull-through in the pipe, or by hand, depending on the size of the pipe. All persons should vacate any section of trench into which the pipe is being lowered. On gradients of 1:15 or steeper, precautions should be taken to ensure that the spigot of the pipe being laid does not move into or out of the socket of the laid pipe during the jointing operations. As soon as the joint assembly has been completed, the pipe should be held firmly while the trench is back filled over the barrel of the pipe. Suitable transverse anchors shall be provided in sloping reaches as defined herein after.

The designed anchorage shall be provided to resist the thrusts developed by internal pressure at bends, tees, etc.

Where a pipeline crosses a watercourse, the design and method of construction should take into account the characteristics of the watercourse to ascertain the nature of bed, scour levels, maximum velocities, high flood levels, seasonal variation, etc. which affect the design and laying of pipeline. The pipe shall be laid accordingly with adequate protection. The pipes in such cases shall be laid below ground with anchor blocks of suitable size and design.

The assembly of the pipes shall be made as recommended by the pipe manufacturer and using the suitable tools.

The socket and spigot ends/other ends of the pipes shall be brushed and cleaned. The chamfered surface and the end of the spigot end has to be coated with a suitable lubricant recommended by the manufacturer of the pipes. Oil, petroleum bound oils, grease or other material which may damage the rubber gasket shall not be used as lubricant. The rubber gasket shall be inserted into the cleaned groove of the socket. It has to be checked for correct positioning. For uPVC pipes procedure


as mentioned in IS 6530 is to be followed. Generally uPVC coupling is used for joining uPVC pipes. In some cases, CID joints may also be used.

The two pipes shall be aligned properly in the pipe trench and the spigot end shall be pushed axially into the socket either manually or with a suitable tool specially designed for the assembly of pipes and as recommended by the manufacturer. The spigot has to be inserted up to the insertion mark on the pipe spigot. After insertion, the correct position of the socket has to be tested with a feeler blade.

7. TESTING OF THE PIPELINES

After laying and jointing, the pipeline shall be tested by the contractor and all pipes or joints which are proved to be in any way defective shall be replaced or remade and re-tested as often as may be necessary until a satisfactory test shall have been obtained. Any work which fails or is proved by test to be unsatisfactory in any way shall be redone by the Contractor.

For Pipe line and other materials at site in tenders of works

Sn Item Payment of quoted cost

1 90% after receipt of material in good its laying jointing/ erection Installation at site and sectional testing of pipeline (Including all the tests required in the manufacture premises acceptance of the inspection & testing reports submission of other papers warranties required as per the conditions of contract for the material supplied

90%

2 10% after successful commissioning of work final site clearance and complete trial run.

10%

SPECIFICATIONS FOR MS NUT AND BOLTS

1. Requirements for Hexagon bolts with nuts in the range 12 mm to 39 mm for

steel structures as per IS: 6639 – 1972 and 1363-1967 or amended up-to-

date.

2 Dimensions for size 12 mm to 39 mm are as per given in table–1 Dimensions

for Hexagon bolts for steel structures) and table –2 preferred length Diameter

combinations and plumbing lengths for Hexagon bolts for steel structures) of

IS: 6639-1972 and amendment No.2 of October 1981 or amended up-todate.

3. Dimensions for screw threads run-outs and under cuts are as per IS: 1369-

1967 or amended up-to-date.

4. Dimensions for ends of bolts and screws are as per IS 1368-167 or amended

unto date.

5. Mechanical properties of the bolts shall confirm to the properly class 4.6 or

6.6. Specified in IS 1367-1967, technical supply conditions for threaded


fasteners (first revision) the bolts shall withstand a minimum sheet stress of

260 MPa.

6. Grade Block (B) grade according to IS: 1367-1967.

7. Designation – For example a hexagon bolt of size M-12, length 30 mm and

property class 4-6 with a hexagon nut shall be designated as: Hex Bolt M-12

x 30 N – IS 6639-4.6.

8. The Hexagon nuts used with Hexagon bolts shall confirm to requirements

given in IS 1363-1967 Black Hexagon Bolts, nuts and lock nuts (6 to 39 mm)

and Black Hexagon screws (dia 6 to 24 mm) 1st review in all respect.

9. The bolts shall be supplied in natural finish.

10. Weight of Hexagon bolts with nuts as per Appendix “A” of IS: 6639-1972.

SPECIFICATION FOR RUBBER INSERTION SHEET

The white colour rubber insertion sheet strictly confirming to IS: 638-1979

or amended up-to-date and duly ISI marked and its table 1 & 11 type A

grade – 1 as required for water works pipe lines carrying potable raw water

fibre reinforced as per clause 3:1.3 shall be free from surface defects, such

as pitting, blemishes and other irregularities and the rubber used shall be

homogenous and free from porosity and grit a judged visually on the

surfaces or any cut out surfaces.

These shall be no visible signs of cracking on the surface or separation of

rubbed from cotton fabric when subjected to bending test.

Each piece of 1 x 10 meters rubber sheet shall be marked in a suitable

position with: -

1. Type, grade and thickness.

2. Month and year of manufactures.

Above size to be supplied in 1 M x 10 M rolls.

± 10% Variation in length and width is acceptable 3 mm x 2 ply.


SPECIFICATION OF SLUICE VALVE

(IS : 14846-2000) (Amended up to date) 1. SCOPE

The specification covers supply of non rising stem type Sluice Valves of various sizes used for water works purpose and having double flanged ends for connections conforming to IS 14846:2000 (amended up to date). The Valve shall bear ISI mark.

2. MATERIAL Material for different component part of Sluice Valve shall be as per Table 1 of IS 14846 : 2000 reproduced below:

S.No

Component Preferred Material

Ref to IS No.

Grade or Designation

Alternative Material

Ref to IS No.

Grade or Designation

1. Body, bonnet, dome stool cover wedge, stuffing box, gland, thrust plate and cap

Grey Cast iron

210 FG 200 Spheroidal or Nodular iron Cast steel

1865 1030

500/7 Grade or Designation

2 Head Wheel Grey cast iron

210 FG 200 Mild steel cast steel nodular iron

2062 1030 1865

F 410 WA230-4500W 400/12

3 Stem Stainless steel

6603 12 Cr 13/04 Cr 18 Ni10/ 04 Cr 17 Ni 12 Mo2

High Tensile Brass stainless steel

320 or 6912 6603

HT 2 FHTB 2 20Cr 13

4 Wedge nut shoe, channel

Leaded tin bronze

318 LTB-2 High Tensile Brass Phosphor bronze

32066912 28

HTB2 FHTB 2

5 Body seat ring, wedge facing ring and bushes

Leaded tin bronze

318 LTB-2 Alloy Steel Stainless steel

3444 6603

Gr.1, Gr.4 Gr 10, 04Cr18Ni 10

6 Bolts Carbon steel 1363 (Part-I)

Class – 4.6 Stainless steel 6603

7 Nuts Carbon steel 1363 (Part-3)

Class – 4.0 Stainless steel 6603

8 Gasket Rubber 638 Type B Neoprene Rubber

9 Gland packing Jute and hemp

5414 Rubber 638 Type –B

10 Gear Spheroidal graphite iron

1865 Gr. 500/7 Alloy steel cast steel

1570 1030

40 Ni 2 Cr1 MO 28 Gr.B

11 Gear housing Grey cast iron

210 FG 200 Cast steel S.G. iron

1030 1865

230-450W 4000/12

12 Pinion & pinion shaft Wrought carbon steel

1570 (Part-3)

C55Mn75 Alloy steel Stainless steel

1570 (Part-4) 6603

40 Ni12Cr1 MO 28 04Cr18Ni10

3. DIMENSIONS/MANUFACTURE

The dimensions of the body shall be as per IS 14846:2000 Nominal size of valve shall refer to the nominal bore of the waterway. The actual bore at any point shall not be less than the nominal size required. Bodies, Bonnets, Flanges, wedges, guide and lugs, seat ring, stem & wedge nuts, bolts an nuts shall be as per IS 14846:2000


The portion of the bonnet (gland and stuffing box) which come in contact with spindle shall be provided with bushings of minimum 3mm thickness and material as specified in Table 1 of IS 14846:2000 as anti-frictional devices.

The flanges and their dimensions of drilling shall be in accordance with the requirements given in IS 1538.

4. GEARS

Gears wherever required & provided shall be of suitable design and workmanship so as to ensure satisfactory working of sluice valve. Gear ratio shall be worked out keeping in view the maximum stem torque, hand wheel diameter and hand wheel effort as per IS 14846:2000.

5. HAND WHEEL

Valves of sizes 200mm and above shall be provided with Hand Wheel. Hand wheel material shall be as per Table-1 of IS 14846:2000 and shall have on the upper side of the rim words ‘OPEN’ and ‘SHUT’ with direction arrows.

6. VALVE CAPS

The stem of sluice valve operated by removable key shall be provided with caps of dimensions as given table 2&3 of IS 14846:2000 and shall be secured by setscrew. Valves of sizes below 200mm shall be provided with valve caps.

7. STUFFING BOX

The minimum inside dimensions of stuffing box shall be in accordance to

table 2 & 3 of IS 14846:2000

8. BYPASS ARRANGEMENT

Sluice valve may be provided without bypass arrangement

9. COATING

All coating shall be carried out after satisfactory testing of the valves prior to

dispatch and shall be as per IS 14846:2000

10. TESTING

The valves shall be conforming to hydrostatic test & test for stem as per IS

14846:2000. The hydrostatic test pressure & duration of the test for valves

shall be as under ( as specified in table 5 & table 6 of IS 14846:2000):

PN Rating Test for

Body/Seat Test Pressure MPa (Gauge)

Test Duration (min)

Body 1.5 5

Seat 1.0 2

Body 2.4 5

Seat 1.6 2

The Hydraulic test shall be carried out by “open ended” methods per IS 14846:2000


11. MARKING The following information shall be cast of each valve body in raised letters:

i. Manufacture’s name or trade mark.

ii. Nominal pressure of valve (PN 1.0 or PN 1.6)

iii. Size of valve (mm)

iv. Heat Number of cast

v. Year of manufacture

vi. ISI mark

vii. Purchaser’s mark as “PHED Rajasthan”

In addition each valve shall bear conspicuously upon it prior to

dispatch:

a. Serial number in punch on top of flanges

b. Where a valve has been tested for only open-end test. it should be

marked ‘O’ distinctly and permanently on flanges adjacent to serial

number.

12. PACKING

Packing of the valve shall be as per IS 14846:2000 NOTE :- Wherever there is reference of IS No. it shall be considered amended

up to date at the time of inspection of supply / replacement by inspection agency. Any amendment shall be effective only when it is implemented by B.I.S.

C.I.D. JOINTS :

i CID joints shall be ISI marked conforming to IS:8794 (amended up to

date). Rubber Rings to be used shall be as per IS:5382 (amended up to date) and of SBR quality type-3. Dimensions of Rubber Rings shall be as per IS:10292 (amended up to date) and Rubber Rings shall be ISI marked.

ii PACKING OF RUBBER RINGS

Rubber Rings for AC Couplings or CID Joints shall be packed & rapped with wire around bags & affixed seal of inspection agency at all joints to prevent any tempering.

iii NUTS & BOLTS

(a) Details of bolts shall be as per table-3 of IS:8794 (amended up to date).

(b) The nuts & bolts to be used with joints shall be as per IS:1363 (Part-1) and IS:1363 (Part-II) (both amended up to date).


COST OF TESTING If any additional test is required, the cost of test shall be borne as follows:

(a) By the contractor in the event of the result showing that the material does not comply with the specifications, and

(b) By the purchaser in the event of the results showing that the material complies with the specifications.

CRITERIA FOR ACCEPTANCE The criteria for acceptance of pipes shall be as per annexure ‘C’ of IS:1592-

2003 (amended up to date). MANUFACTURERS CETRIFICATE The manufacturer shall furnish a certificate as required under C-6 of

annexure ‘C’ of IS;1592-2003 (amended up to date). SAMPLING The sampling, inspection and acceptance shall be in accordance with

IS:7639 Each inspection lot shall include only items of the same diameter and of the same class and as per scope of Inspection as defined in Appendix ‘D’.

MARKING The Pipes/C.I.D. Joints/Rubber Rings for C.I.D. Joints shall be legibly and

indelibly marked with the following information. (To the extent as provided in relevant ISS):-

1. Manufacture name / Stamp with last two digits of year of

manufacture 2. Nominal diameter 3. Class reference. 4. Manufacturing standard to which the pipe confirms (IS: 8329 and

ISO 2531) and BIS certification mark. 5. Mark of the pre-dispatch inspecting authority.

NOTE : Wherever there is reference of IS No. it shall be considered

amended up to date at the time of inspection of supply/replacement by inspection agency. Any amendment shall be effective only when it is implemented by BIS.


Specifications of Civil Works

Preparatory Work : The contractor shall provide & maintain a benchmark with a level at a location approved by Engineer-in-Charge at site. All levels shall be deemed to refer to that benchmark. The contractor may establish other secondary benchmark on the site. During all storage of preparation & construction, the contractor has to cooperate in the case of linkages such a incoming & outgoing pipes etc. The design is based on the recommendations of the applicable latest Indian standards. The main standards followed are :- IS 456 : Plain and reinforced Concrete IS 3370 : Concrete Structures for the Storage of liquids IS 875 : Design loads. Material IS 1893 : Criteria for earth quake resistant design and structure.

Specification of main material and equipment of supply and inspection.

The specifications and standards of the main equipment of supply are laid down in the following paras. This does not cover the entire list of material and equipment that would have to be supplied and all the material not covered will be supplied as per the latest ISS and of the best quality.

The contractor is responsible for the equipments and material he supplies upto the end of the defect liability period and is expected to supply all materials only as per specifications. The P.H.E.D. intends to approve drawings of some of the equipments before supply and also to inspect or to get inspected from a third party before dispatch of some of the material and equipment. It may however be noted that the contractor is responsible for the material and equipment to be confirming to the specification upto the commissioning and will bear the responsibility if found otherwise inspection of a prior inspection / approval.

CONSTRUCTION MATERIAL :

Cement (to be procured by the contractor) The cement for use in all the units shall be ordinary Portland Cement of Grade 43 ISI marked conforming to IS:269. Being water retaining structures of high degree of importance, cement manufactured by the mini cement plant shall not be used in this work. Cement manufactured by reputed major plants shall only be used.

Brick Class designation 75 as per item in Schedule "G" (Procured by the

contractor) : Bricks to be used should be as per IS:3367 as PWD specification and Suratgarh Kiles No.1 bricks are to be used. Steel for Reinforcement


Rubbed Steel as per IS:1786 or IS:1139 of grade Fe 415 IS Marked is to used for reinforcement.

Coarse Sand

Wherever mentions sand of cement concrete. Bikaner bajri is to be used. Grade of bajri should be as per requirement of work. Silt content should not be more than 8%.

OTHER CIVIL WORKS :

The civil works should be carried out in accordance with the Rajasthan PWD Specification and Explanatory Notes of Building and Housing Drainage in the latest version, In case where the PWD Specifications and specifications given the tender documents are silent about any aspect in respect of any item, the work shall be carried out as per the relevant IS code of practice in the latest version and as per sound engineering practice as decided by the Engineer-In-Charge.

Some of the important IS codes to be referred during execution of the work are as follows :

Earth Works :

IS : 3764 Safety code for excavation works IS : 3720 Methods of tests for soils Concrete Works : IS : 280 Mild steel wire for general engineering purposes. IS : 269 Portland cement IS : 383 Coarse and fine aggregate IS : 432 Medium tension steel bars & hard drawn steel wire. IS : 456 Code of practice for plain and reinforced concrete IS : 516 Methods of testing for strength of concrete IS : 1156 Fabric reinforcement IS : 1199 Method of sampling and analysis of concrete IS : 2062 Structural Steel IS : 2086 Methods of tests for aggregates of concrete. IS : 2502 Code of practice for bending and fixing of bars for concrete reinforcement IS : 3370 Code of practice for concrete structures for the storage of liquids IS : 7861 Recommended practice for hot weather concreting (Part-I) IS : 1200 Method of Measurements IS : 4082 Recommendation on stacking and storage of construction material on site. IS : 2508 low Density Polythene (LDPE) film Sluice Valves :

IS : 14846-2000 CI Sluice vales (PN 1.0)

The contractor shall provide and maintain a benchmark with a level and at a location approved by the Engineer In Charge at each construction site. All


levels shall be deemed to refer to the benchmark. The contractor may establish other secondary benchmarks on the site.

During all stages of preparation and construction the contractor has to co-operate with the other contractors working on the same site. This is particularly important in the case of linkages such as incoming and outgoing pipes etc.

Cement concrete (plain or reinforced) shall comply with the requirement of specifications of Rajasthan PWD (BSR) specification and explanatory notes for building and house drainage except in so far as these are not altered or modified by specific stipulations as given in the specification herein.

The concrete mixed to be used shall be as following :

Water bearing structure including roof M 25

Other structural concrete M20 or M15 as per drawings

Lean concrete in foundation As per drawing

The aggregates and cement shall be proportioned by weight only. The mixing shall invariably be carried out in mechanical mixer and in such a way so as to avoid any loss of water or cement. No hand mixed concrete will be allowed.

To obtain a dense concrete and to reduce changes of honey combing, water proofing compound of standard make as approved by the Engineer In Charge shall be used in concrete work. The quality of the admixture shall be as prescribed by the manufacture and as approved by the Engineer-In-Charge.

Being water-retaining structures, they bear high degree of importance and such cement manufactured by the mini plants shall not be allowed to be used. Concrete work

During the progress of construction sampling, preparation of test specimens, curing and testing of concrete shall be conducted in accordance with IS:1199 and IS:516, to determine whether the concrete being produced complies with the strength requirements as specified. General RCC :

The aggregate & Cement shall be mentioned by weight only. The mixing shall invariably be carried out in mechanical mean & in such a way so as to avoid any loss of water or cement. no hand mixed concrete is allowed. It conveyed, placed in position & compacted by suitable of mechanical vibrator, as rapidly as practicable but in no case the time of compaction over mixing shall increase 30 minutes, standby concrete mixer & vibrator shall be available at site.

The concrete shall be cured properly curing it moist constantly until end of three weeks from the date of casting.


Ordinary Portland Cement (OPC GRADE Conforming to IS:269) marks shall only be used. Cement manufactured in mini plants shall not be used. All reinforcement used shall be of TOR BAR (Fe 415) ISI marked shall be clean & free from loose mill scales, rust & oil or other coating which may destroy or reduce bond. Minimum size of reinforcement bars shall be new or in good condition with out holes or dents, it has to be approved from Engineer-In-Charge. The individual elements should be in good shape to ensure a gap free shuttering according to the drawings. The paint used shall have good base & shall not stick to the concrete surface. Suitable system have to provide or keeping the surface in place & keeping the correct distance in case of walls. Construction joints should be minimum & they have to be executed with most carefully continuing concreting the loose material has to be removed & they have to clean properly. Honey combing has to be avoided by suitable shuttering & proper of vibrators.

The water used for concreting shall be free from all undesirable salts & other impurities & shall be fit for concreting as per IS:456-2000.

It is specifically being mentioned that the ground water available in this area may not be portable 7 not fit for concreting, therefore, transportation from nearby canal water source has to be made. For the purpose of concreting & curing only potable water is to be used. For this purpose contractor shall provide a diesel pump set with necessary piping arrangement to ensure proper curing.

The exposed surfaces of concreting shall be continuously in wet condition by

pounding or covering with a layer of sack canvas, Hussein or similar

materials kept continuously wet for at least 21 days from the date of placing

of concrete.

Mixing of Concrete :

Ingredients of concrete such as cement, coarse aggregate, fine aggregate and

water are to be mixed by mechanical mixture by volume.

The Engineer-In-Charge will make arrangement to check the functioning of

machinery at site of work at least one day before the pouring of concrete.

Testing :

Material & workmanship shall come with the relevant specifications as

described in subsequent clauses & in Rajasthan PWD (BSR) material or work

man-ship not covered by the above specification, shall cover with the relevant

IS (with up to date amendments).

Acceptance of Concrete :


The concrete tested in accordance with Testing of concrete clause above,

shall meet the criteria for acceptance of concrete as per IS 456. The strength

of concrete shall be the average strength requirement for different grades of

concrete. If the advance 7 days tests show crushing strength that are too low,

corrective measures shall be taken at once, at the Engineer's directions.

Without waiting for the result of the 28 days tests.

Failure to meet strength requirement :

In cases where concrete tested fails to meet the test requirement, the

Engineer in Charge shall have the right to require any one or all the following

additional tests. The contractor at his own expenses shall carry these out.

The Engineer In Charge shall be the final authority for interpreting the result

& shall decide upon the acceptance or otherwise.

1. Curing & load testing of the concrete member concerned representative by the test, which failed.

2. Replacement of any such options of the structure. No payment shall be made for the dismantling of the concrete, relevant form work, or reinforcement. The contractor at own expenses shall make embedded fixtures & reinforcement of adjoining structures damaged during dismantling well.

3. Extended curing of the structure of the concrete represented by the specimen.

4. Collecting & testing of a core specimen form the hardened concrete. The location number 7 size of such specimen shall be taken as directed by the Engineer-In-Charge.

5. Any other test i.e. ultrasonic &/or rebound hammer tests to be decided by the Engineer, at the contractor's own cost.

Check of reinforcement & Concreting :

All reinforcement shall be got checked & recorded prior to pouring of concrete, by a representative of the Engineer-In-Charge, not below the rank of Assistant Engineer. Similarly the entire concrete pouring work shall be done in the presence of an officer not below the rank of Junior Engineer. The contractor shall therefore, give a notice of minimum three days to the Engineer-In-Charge or his representative, such that the works can be checked by him or his representative.


TECHNICAL SPECIFICATIONS OF MONOBLOCK PUMPING SETS

1.0 SCOPE: These specifications cover supply of Electric Motor driven

Horizontal. Centrifugal Pumping Sets of Mono Block type suitable for operation on 3 Phase, 50 HZ A.C. Supply 380 Volts (+/- 15 % i.e. between 323 to 437 Volts) for pumping clear cold fresh water generally conforming to IS: 9079 – 1989 (amended or revised up to date) except for the provisions / specifications mentioned herein, various duty conditions for which the Pumping set are required are given in Annexure I. The electric motor should be screen protected drip proof or totally enclosed fan cooled AC induction motor of squirrel cage type with synchronous speed of 1450 RPM or 3000 RPM should be designed manufactured and tested generally as per IS: 7538-1996 and provision / specifications mentioned herein for driving the pumping sets.

2.0 TYPE / MATERIAL OF CONSTRUCTION:

2.1.1 PUMP: (a) Casing and Impeller: Gray cast Iron of grade FG 200 as per

IS: 210-1993 ( amended or revised upt o date ) (b) Casing ring and impeller ring ( If provided ) casting grade FG

200 OF is:318 1981 ( amended up to date ) The impeller should be dynamically balanced and eyed to the shaft passage provided through hubs, to give hydraulic balance and also to relieve stuffing box of any untoward loads. As an alternative providing of radial rings of appropriate size on the back of impeller for hydraulic balancing is also acceptable.

(c) Shaft sleeve- Bronze grade LTB-2 of IS: 318 – 1981 or chrome steel 07 Gr. 13 as per IS: 1570 (Part 5) – 1985.

(d) Stuffing box shall be water sealed or mechanically sealed. (e) Gland – Gray cast iron of grade FG 200 as per IS: 210-1993

or Bronze Grade LTB 2 of IS: 318-1981. (f) Water Thrower – rubber (Optional). (g) The direction of rotation should be casted so as to be visible

when viewed from driving end of pump shaft ( Clock wise or anticlockwise )

(h) For duty head up to and equal to 60 meters the pump set shall be single stage only and for duty head above 60 meters the Nos. of stages shall not be more than two.

2.1.2 MOTOR:

(a)AC 3 Phase 50 HZ induction motor suitable for operation in voltage range of 380 +/- 15 Volts ( 323 to 437 Volts ) without getting overloaded, in the entire range of operation of pump having winding insulated class E/B materials and impregnated to exclude moisture suitable for tropical service conditions. The temperature rise (measured by resistance method) shall be in accordance with the IS: 7538-1996 as per clause 23.1.2. The temperature of cooling medium shall be assumed as 45 degree


centigrade. The temperature rise shall not exceed the specified temperature rise limit by more than 10 degree C. When Motor is continuously operated at rated load at 323 Volt as per clause 23.2.1 of IS 7538-1996. (b) Rotor: Squirrel cage type. (c) Shaft: Grade 40 C of IS: 1570 (Part – 2) (d) Enclosure: TEFC / SPDP. (e) Performance: As per IS: 7538-1996 (amended up to date)

2.2

The pump shall be suitable for satisfactory operation within the range of + 10 % and – 25% of the specified duty point head and the entire range of operation (without noise or cavitations) shall be on the stable portion of the curve. The specified duty point should be as close to the maximum efficiency point as possible.

2.3

Pump test, tolerance and guarantee of pump performance shall be as per IS: 11346 – 1985 (amended up to date) and that no negative tolerance ion quoted efficiency shall be allowed. The prescribed performance at duty point shall be tested at the voltage 380 Volts. The test at duty point shall be carried out with a minimum suction lift as defined in Clause 10.1 (b) of IS: 9079-1989.

2.4 Guaranteed efficiency at duty point (under operation at prescribed voltage i.e. 380 V should be quoted without any negative tolerance. In all cases this overall efficiency should not be less than the calculated overall efficiency based on pump efficiency as given in figure 1 & 2 of IS: 9079-1989 (amended up to date ) and motor efficiency for quoted motor KW as given in table in these figures.

2.5 Pump shall be suitable for use up to minimum suction lift as specified in Clause 10.1 (b) of IS: 9079-1989. The offers not in consonance with this minimum menomatric suction lift are liable to be rejected. The NPSH requirement of pump shall be in consonance with this provision. The cavitations test shall be conducted as per clause 5.7 of Appendix “D”.

2.6 The master curves of pump only are not acceptable. The firm should submit specific duty point curve covering complete working range. The curve should indicate following relations as minimum requirement of the curve:-

1) Discharge V/S Head. 2) Discharge V/S Overall efficiency. 3) Discharge V/S Pump efficiency. 4) Discharge V/S NPSH required.


2.7 The prescribed performance of the pump set including NPSH r at duty point will be checked and guaranteed at the rated speed at rated voltage of 380 Volts and rated frequency of 50 HZ The motor rated KW shall be suitable for operation of pump in range from + 10 % to –25 % of duty head. The actual performance shall however also bed recorded at the lowest voltage i.e. at 323 volts by the inspecting agency in the inspection certificate and it shall be ensured that motor does not get over loaded.

2.8 The output motor rating shall be as per clause 15 of IS: 9079-1989.

2.9.1 The motor shall be suitable for entire working range of pump from + 10 % to –25 % of duty head. Motor rating should be higher or equal to highest of the following: a )Consumption at + 10 % of the duty head of pump. b) Consumption at – 25 % of the duty head of pump. c) Consumption at duty point of pump plus margin as given below:

BKW required at operating point

multiplying factor to decide drive rating

Up to 1.5 1.5

Above 1.5 to 3.7 1.4

Above 3.7 to 7.5 1.3

Above 7.5 to 15 1.2

Above 15 to 75 1.15

Above 75 1.1

2.10 Marking: The marking shall be as per relevant IS Code. 3. TECHNICAL SPECIFICATION OF HORIZONTAL SPLIT CASING

CENTRIFUGAL PUMPS COUPLED WITH ELECTRIC MOTORS. 3.1 These specifications cover supply of centrifugal pumps generally confirming

to IS 6595 (Part-2) 1993 (amended up to date) directly coupled to AC Induction Motor generally confirming to IS:1978 (amended up to date) through a flexible coupling mounted on a common study and robust C.I./Fabricated M.S. base plate manufactured by pump manufacture. The base plate should be designed to withstand load and vibrations of complete unit. After proper alignment of unit base plate should not show any vibration during the entire range of pump operation. Coupling guard should be provided to give safety against accidental breakage of coupling.

3.2 MATERIAL OF CONSTRUCTION AND OTHER DETAILS: (A) PUMP: Specification: IS 6595 (Part-2) 1993, (Amended up to date) Type : Horizontal Split Casing

Speed at duty condition: Matching with nominal speed of prime mover. Suction (in meters) (1) MATERIAL OF CONSTRUCTION:

Casing : Gray cast Iron of grade GF-200 as per IS:210 - 1978 (amended or revised up to date)

Impeller, casing ring and Impeller ring (if provided) bronze grade: TB-2 of IS: 518-1981 (amended up-to date). The impeller


should be dynamically balanced and keyed to the shaft passage provided through hubs, to give hydraulic balance and also to relieve stuffing box from any untoward loads. As an alternative, providing of radial ring of appropriate size on the back of impeller for hydraulic balancing is also acceptable.

Shaft sleeves: Bronze grade LTB-2 of IS: 318 - 1981 or chrome steel 07 Gr.13 of IS: 1570 (Part-B) 1986.

Gland: Gray cast iron of Grade FG-200 as per 210-1978. The direction of rotation should be casted so as to be visible

when viewed from driving end (clockwise or anti-clockwise)/ Pump shaft should be 40 C 8 of IS: 1570 (Part-2 section) 1979.

(B) MOTOR: 1. AC 3 phase 50 Hz induction motor suitable for operation in voltage

range of 415-volt + 6% - 15% without getting overloaded. Winding insulation shall be class B/F insulation (in case of class F insulation, temperature rise limit shall be as per class B insulation) and impregnated to exclude moisture. It shall be suitable for tropical service conditions. The temperature rise (measured by resistance method) shall be in accordance with the IS: 325-1978. The temperature rise shall not exceed the specified temperature rise limit in table-1 by more than 10 degree centigrade, when motor is continuously operated at 350 volts)

2. Rotor: Squirrel cage type. 3. Shaft: Grade 4008 of IS 1570 (Part-2) 1979 4. Shaft: SPDP/TEFC (as per purchaser's requirement) 5. Synchronous speed: 1500-RPM (Maximum) Pump RPM should be

designed on the basis of actual speed available corresponding to synchronous speed of 1500 RPM.

6. Performance: As per IS 325-1978 (amended or revised up-to-date) but for voltage range it shall be +6% and -15% of 415 volt.

7. Motor should not get over-loaded in the entire operating range of pump from +10% to -25% of specified duty point head. Motor rating should be higher or equal to higher of the following:-

(a) Consumption at +10% of the duty head of pump. (b) Consumption at -25% of the duty head of pump. (c) Consumption at duty head of pump plus margin. As given in table 11.4 of "Manual of Water Supply & Treatment" which

is as follows: = BKW required at the Multiplying factor

Operating Point Decide drive rating

Up to 1.5 1.5

1.5 to 3.7 1.4

3.7 to 7.5 1.3

7.5 to 15 1.2

15 to 75 1.15

Above 75 1.1

The pumping set shall be suitable for satisfactory operation within the

range of +10% and -25% of the specified duty point head and entire range of operation of pump (without noise, cavitations) shall be on the stable portion of the curve. The specific duty point should be as close to the maximum efficiency point as possible. Pump test, tolerance,


guarantee of pump performance shall be specified as per IS 6595 (Part-2) 1993 (amended up-to-date). Negative tolerance on quoted pump efficiency shall not be allowed. The test at duty point shall be carried out at given suction conditions. The NPSH required on duty point shall not exceed four meters or as prescribed specially.

Minimum guarantee efficiency at duty point should be quoted without negative tolerance.

The firm should submit specific duty point covering complete working range. The curve should indicate following relations as minimum requirement of the curve.

Discharge v/s head. Discharge v/s pump efficiency Discharge v/s pump input. Discharge v/s NPSH required. The performance curves and various related data for pump and motor submitted with the offer should be authenticated by respective manufacturers. Offers received without an authentication may be made liable for summarily rejection.

VACUUM PUMP: -

The vacuum pump sets shall be electric driven monoblock type for priming of centrifugal pumps, handling of clear water of temperature not more than 30 degree and bearing of sufficient capacity. Pump Casing: - CI Grade FG-200 of IS: 2010 Stage of Pump: - Single stage Rotor/Impeller; - GM/Bronze as per IS: 318-1981 Pump Shaft: - Carbon steel grade C-40 as per IS: 1570 Part-II:1989 Electric motor: - 2800 RPM/3 Phase/50 Cy/sec/AC Main 440 V Pump size: - Suction/Delivery – 25mm/25mm Maximum displacement: - 22 cum/Hr

4 Miscellaneous requirements 4.1 Nameplates, signboards, nomenclature Each item of the plant shall have permanently attached to it in a conspicuous position a nameplate, on which shall be engraved or stamped the manufacturer's name, type and serial number, year of manufacture, details of the design capacity etc. Such labels shall be of non-hygroscopic material to be approved by the Engineer in Charge. Near by or on each item of the plant, shall be fixed a plate with the name and nomenclature (code) of the item according to the project nomenclature. It shall be visible from a distance of several metres. The contractor shall also provide bilingual signboards and instruction tables of durable material, throughout the plant, for the purposes of operation, maintenance and security:

• Danger and caution signs (English and local language)

• Preventive maintenance schedules (local language)

• Operating instructions (local language)

• Unit names (English and local language)

• Nameplates at the doors to the units (English and local language) Signboards and plates shall be appropriately sized in relation to the relevant item and its surroundings. Details of the proposed inscription, size, material and colours shall be submitted to the Engineer in Charge for approval before any signboards or


plates are manufactured. They shall be compatible with the instructions in the operation manual. All cables shall be provided with clip-on identification numbers on both ends and at all terminations in between, for identification. The nomenclature shall correspond to the electrical as-built drawings. The nomenclature and labeling of the plant shall be decided in close co-operation with the Engineer in Charge. 4.2 Fire extinguishers The contractor shall provide dry powder type CO2 fire extinguishers (10 kg) for the pumping stations at the following locations after consultation with the Engineer in Charge:

- Electrical panel room (2 Nos. at each P.S) - Pump rooms (maintenance bay) ( 2 Nos. at each P.S) - Control room (1 No at each P.S)

4.3 First aid kits Complete first aid kits at all the sites shall be provided for the maintenance bays of the pump houses. The first aid kit shall consist of all materials, medicines necessary for treatment of cuts, wounds etc. Following materials in general in sufficient quantities shall be provided.

- Medical cotton, sterile cotton pads - Cotton Bandages, elastic bandages - Pair of scissors, packet of new shaving blades - Sticking plaster for medical use. - Band aid stripes

Following chemicals/medicines shall be provided in sufficient quantities: - Tinctures iodine and mercury chrome - Burnol ointment - Bottles of spirit and of Dettol - Toilet soaps

To be procured under medical advice - Skin lotions and ointments for burns, acid effects - Eye drops for soothing effects

Fire extinguisher and first aid kits shall be provided for the end of the commissioning period only.

Signature of Contractor Executive Engineer PHED District (R) Dn.II Bikaner

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