The LNM Institute of Information Technology(Deemed University)

TECHNICAL SPECIFICATION(CIVIL WORK)

SCOPE OF WORK

The Owners intend to construct new building (as detailed below) to enable them to start the Academic session from July, 2018

1. CONSTRUCTION OF BOYS HOSTEL

This is a broad scope of work as indicated in the site plan/ BOQ. The actual buildings and their numbers and their areas are liable to get changed as per subsequent requirements and detailed design.

Note:- Presently estimated Bill of Quantities for “Construction of Boys Hostel Building” are attached for the Tendering process. The contractor shall be bound to execute those buildings within the stipulated contract period of 05 months.

However the owner also reserves the right to award the work of the building to some other agency without assigning any reason whatsoever.

The phasing of construction of buildings shall be decided mutually so as to enable the owner to start the Academic year by July 2018.

TECHNICAL SPECIFICATION OF MATERIALS

1. Materials shall be of the approved quality best obtainable. A list of materials of approved brand(s) and manufacturers(s) is indicated in the annexure. Testing of materials of approved brand(s) may have to be done at the discretion of Architect/Project Manager. Cost for testing to be borne by the contractor.

In case, for some reason or other materials are required to be obtained from any manufacturer other than those listed, then prior approval from Architects will be necessary supported by a relevant test certificates qualifying the required standard. Further tests as directed by the Architects shall also be carried out by the contractor at their own cost, if required.

2. Samples of all materials including the sources shall be got approved before placing order and the approved sample shall be carefully preserved in an appropriate manner at the site office for verification from time to time.

3. For standard bought out items, the sizes manufactured by the firms listed, shall prevail when there is discrepancy in the sizes mentioned in the schedule without any financial adjustment.

4. Materials shall be tested in any approved Testing Laboratory conforming to the requirements and frequency indicated in the list of Mandatory test. The test certificate in original shall be submitted to the Architects and entire charges connected with testing including charges for repeated tests if ordered, shall be borne by the contractor.

5. It shall be obligatory for the contractor to furnish certificates(s), if demanded by the owner, from the manufacturer or the material suppliers that the work has been carried out by using their material and as per their recommendations.

6. All materials supplied by the Employer/ any other specialist firms shall be properly stored and the contractor shall be responsible for its safe custody until they are required on the works and till the completion of work.

7. The contractors without any extra cost shall provide all equipment and facilities for carrying out field tests on materials.

8. Unless otherwise shown on the drawings or mentioned in the Schedule of quantities or special specifications, the quality of materials, workmanship, dimensions etc. shall be followed hereunder.

8.1 EARTH FILLING

Shall be selected earth suitable for filling as approved by the owner and free from building rubbish or organic decomposed materials. It shall be obtained either from excavation or brought from outside as specified in the schedule of items. Black cotton soil shall not be used for filling.

8.2 CEMENT

Cement shall be provided by owner (LNMIIT) for all construction.

8.3. FINE AGGREGATE

Sand shall be from natural source or crushed stone screenings, if allowed, chemically inert, clean, sharp, hard, durable and well graded and free from excessive deleterious materials. The silt content shall be within 8%. If it is excess, washing shall be done in an approved manner to bring it within allowable limit.

The fine aggregate for concrete shall be graded and the fineness modulus may range between 2.60 to 3.20.

The fineness modulus of fine aggregate may range between 1.80 to 2.60 for plasterwork and all other works.

8.4. COURSE AGGREGATE

Shall consist of crushed or broken stone 95% of which shall be retained on 4.75 mm IS test sieve. It shall be obtained from crushing Granite, Quartzite, Trap, basalt or similar approved stones. Coarse aggregate shall be chemically inert when mixed with cement and shall be roughly cubical in shape and free from soft friable, thin laminated or flaky pieces.

8.5 STEEL REINFORCEMENT MILD STEEL BARS

Mild steel reinforcement bars shall be provided by owner (LNMIIT).

8.6 BRICKS

The bricks shall be first class kiln burnt bricks of regular and uniform size, shape and colour, uniformly well burnt throughout but not over burnt. They shall be free from cracks or other flaws.

They shall show a fine grained uniform homogeneous and dense texture on fracture and be free from lumps of lime laminations, cracks, air holes, soluble salts causing efflorescence or other defects which may in any way impair the purpose intended.

They shall not break even when thrown on the ground on their flat face in a saturated condition from a height of 60.00 cm (About 2'). The size of brick shall be 230 mm x 115 mm x 75 mm only). Tolerance on dimensions upto (+ or -) shall be as per I.S. code-2222. After immersion in water, absorption by weight shall not exceed 20 percent of the dry weight of the brick when tested according to I.S. S. No.1 077 -1970. The brick shall have a minimum average compressive strength of 35 to 50kg per cm2 as specified on the nomenclature of the item.

The bricks to be used for the work shall be approved by the Project Manager/ Consultants/ Architects beforehand.

8.7 WATER

Water for mixing Cement mortar or concrete shall not be salty or brackish and shall be clean, reasonably clean and free from objectionable quantities of silt and traces of oil, acid and injurious alkali, salts organic matter and other deleterious materials which will either weaken the mortar or concrete or cause effloresce or attack the steel in reinforced cement concrete. Water shall be obtained from sources approved by the Architect. Potable water is generally considered satisfactory for mixing and curing concrete, mortar, masonry etc. Where water other than municipal source is used this shall be tested in an approved testing laboratory to establish its suitability. All charges connected therewith shall be borne by the contractor.

8.8. CEMENT MORTAR

Cement mortar shall be of proportions specified for each type of work in the schedule. It shall be composed of Portland cement and sand. The ingredients shall be accurately gauged by measure and shall be well &evenly mixed together preferably in a mechanical pan mixture. Care beige taken not to add more water than is required. No mortar that has begun to set shall be used. If hand mixing is done, then it shall be done on pucca water proof platform. The gauged materials shall be put on the platform and mixed dry. Water will then be added and the whole mixed again until it is homogeneous and of uniform color.

8.9. TIMBER

The timber shall be type specified in item and of good quality and well seasoned. It shall have uniform color, straight grains and shall be free from dead Knots, Cracks and sapwoods. The moisture content shall be within 12% for 50 mm and above thickness and 10% for thickness below 50 mm.

8.10. ADMIXTURE

Project Manager may at his discussion instruct contractor to use any other admixture in the concrete.

8.11. MATERIALS FOR STONE CLADDING WORK

8.11.1 STONE: As specified earlier the stone should be cut in to slabs of required thickness along the planes parallel to the natural bed of stone.

8.11.2 Accessories, Ties and Anchors

A. Stone Anchors: Provide stainless steel ties and anchors as designed by Contractor's engineer with length to suit wall conditions. Provide stone anchors which comply with local building codes. Comply with requirements of IS: 4101 (Part -1) - 1967.

B. Buttons: Provide lead or plastic buttons of thickness necessary to make joint width indicated.

8.12 Mortar

As specified earlier.

8.13 Fabrication

A. Stone Fabrication; Fabricate work to be truly straight, plumb, level and square and to sizes, shapes, and profiles indicated on approved shop drawings. Fabricate work with uniform, tight joints.

1. Stone to be 300mm high (or as required) (center to center of joints), random widths, with all exposed surfaces fully custom dressed.

2. Provide minimum 150mm return on all corner stone’s.

Joint Widths: Maintain a uniform 10mm wide horizontal joint between stone units or stone and concrete. Provide 7mm wide vertical joints between stone units.

Erection and Installation

General Installation Requirements: Strictly comply with quarry/fabricator's instructions and recommendations of setting materials manufacturers, except where more restrictive requirements are specified in this section.

Individually Set Stonework: Set stone in strict compliance with approved shop drawings and erection drawings, providing anchors, supports, fasteners and attachments as indicated. Shim and adjust stone in true plane with accurately aligned joints of uniform width.

Keep cavity behind stones clear and free of mortar and all other obstructions to the downward and outward flow of water, except for mortar spots at anchors and ties, and fill space completely with non- staining grout placed in small lifts or insulation as detailed.

Flashings: Coordinate stonework installation with flashing installation to ensure completely waterproof and weather tight construction and assembly. Thoroughly inspect all flashings before concealing and seal all penetrations through flashings with thick bed of sealant.

Weep Holes: Provide fully open 1" high weep holes as required to allow for a positive means of drainage.

Stone Pavers: Install in bed of mortar as detailed. Assure that surface of pavers slopes to drain without birdbaths.

8.14 Repair, Pointing and Cleaning

Remove and replace masonry units which are loose, chipped, broken, stained or otherwise damaged, or if units do not match adjoining units as intended. Provide new units to match adjoining units and install in fresh mortar or grout, pointed to eliminate evidence of replacement.

Pointing: During the tooling of joints, enlarge any voids or holes, except weep holes, and completely fill with mortar. Point-up all joints including corners, openings and adjacent work with white cement added with pigment to achieve colour acceptable to the Architect, to provide a neat, uniform appearance, prepared for application of sealants. The depth of mortar in pointing work shall not be less than 20 mm.

Final Cleaning (Masonry): After mortar is thoroughly set and cured, clean masonry as follows:

1. Remove large mortar particles by hand with wooden paddles and non- metallic scrape hoes or chisels.

2. Test cleaning methods on sample wall panel; leave 1/2 panel uncleaned for comparison purposes. Obtain Project Manager's / Architect's approval of sample cleaning before proceeding with cleaning of masonry.

8.15 Protection of Work

A. During erection, cover top of walls with waterproof sheeting at end of each day's work. Cover partially completed structures when work is not in progress.

B. Extend cover a minimum of 24 inches down both sides and hold cover securely in place.

C. Staining: Prevent grout or mortar or soil from staining the face of stone work to be left exposed or painted. Remove immediately grout or mortar in contact with such stone work.

D. Protect base of walls from rain-splashed mud and mortar splatter by means of coverings spread on ground and over wall surface.

E. Protect sills, ledges and projections from droppings of mortar.

F. Protect all external corners ledges, copings, sills etc. by means acceptable to the Project Manager / Architect or as directed by them.

G. Provide final protection and maintain conditions in a manner acceptable to Installer, which ensures unit masonry work being without damage and deterioration at time of substantial completion.

The contractor shall, at his own expense without extra charges shall make provision for all shoring, strutting, close or open timbering, pumping, dredging or bailing out water and the trenches shall be kept free from water until the work in foundations is completed and trenches refilled. The trenches shall be inspected and passed before concrete is placed. The measurements shall be the exact length and width of the allowed step of the trench or footings as shown on the drawing (without working space), and depth shall be measured vertically. The extra earthwork done by the contractor, providing steps etc. and earth work done in making ramps/steps as approach to work place shall not be measured and paid for.

8.16 Earth Filling: Filling can be general in the sides of foundation trenches, under floors and for site formation. The earth to be used for filling shall be free from saltpeter organic or other foreign matter. The space around the foundations in trenches and under floors shall be cleared of all debris, brick piece, or any other rubbish, surplus mortar falls etc. Filling shall be done in layers not exceeding 150 mm thickness. Each layer shall be well watered and rammed to the satisfaction of the Project Manager. Final surface shall be neatly dressed.

The earth filling shall be computed from levels recorded before start of filling and after completion of filling, the quantity so computed shall be paid with deduction of 1/13 as mentioned in para above for open site formation and without any deduction of 1/13 for filling under floors i.e. in confined situations.

Sand-Filling: The sand shall be clean and free from any foreign matter. Sand filling shall be done, measured and paid in the same manner as earth filling as described in the foregoing para.

Hard Core: Shall either be of stone ballast, gravel or stone rubble of size mentioned in the schedule of quantities and shall be free from dust and other impurities. Hard core of stone ballast not exceeding 40 mm, and shall be laid in required thickness, dry, rolled and consolidated with a power roller to the satisfaction of the Project Manager unless otherwise specified in the schedule of quantities.

Hard core of rubble stone shall be laid with stones of required height vertically, closely and hand packed with smaller pieces and/or stone ballast 40 mm, as directed by the Project Manager and consolidated dry with a ten tonne power roller unless otherwise specified in the schedule of quantities to the satisfaction of the Project Manager.

No separate payment shall be made for re-excavation or loosening of excavated soil for disposal and transportation due to its having become hard or consolidated due to passage of time, rains or any other cause whatsoever.

The lead shall be measured by the shortest route possible.

8.17 Anti-termite treatment shall be as per IS-6313 (part II) 1971 with a guarantee period of 10 years and shall be carried out by an approved specialist agency.

SECTION -IIPLAIN AND REINFORCED CONCRETE WORK

2.1 Cement Concrete: For foundations shall be mixed in proportion and with ingredients as specified in the schedule of quantities. The concrete shall be mixed in a mechanical mixer. No concrete shall be mixed that cannot be consumed within half an hour. It shall be deposited gently in the trenches in horizontal layers not more than 30 cm. thick and rammed and consolidated with steel rammers of 5 to 6 kg weight. After laying and consolidation is completed watering twice a day for a week from the next day shall be done.

2.2 Reinforced Cement Concrete Work:

2.2.1 General: It is intent of these specifications to ensure that all concrete placed at various locations in the job should be durable, strong enough to carry the design loads; it should wear well and be practically impervious to water. It should be free from such defect as shrinkage, cracking, and honey combing and soiling of the surface. Unless otherwise called for in these specifications as plain and reinforced concrete shall confirm in all respect to IS 456: 1978.

2.2.2 Proportions: The proportion by volume of the concrete in the various parts of the work will be specified on the drawings and shall be accurately measured. The quantity of water used shall be the minimum consistent with practical workability and shall be varied as required to suit the moisture content of the aggregate and to produce concrete having the specified slumps.

2.2.3 Mixing: The aggregate and sand shall be free from all list and earthy matter washed if required by the owner before using. The materials shall be accurately measured in boxes and mixed in a machine. Water being added in required quantity only. The mixture shall be semi-liquid mass with cement uniformly distributed.

2.2.4 Strength: Concrete mixed in the proportions desired should have compressive strength at 7 and 28 days after placing not less than the following:

Concrete Mix Minimum crushing strength

7 days kg. per Sqm. 28 days

1. 1:2:4 (M-150) 100 1502. 1 :1-1/2:3 (M-200) 135 2003. 1: 1 :2(M-250) 170 250

The contractor shall as and when directed by the owner cast 6 cubes of the concrete being used in the work and after maturing shall get them tested. The cost of all testing shall be borne by the Contractor.

2.2.5 Mixing: All concrete whether plain or reinforced, ordinary or controlled shall be mixed in a full bag mechanical mixer, having a minimum drum speed of 60 revolutions per minute. The cement and aggregate shall be first mixed dry until all particles of aggregate are coated with cement. Water shall be added and mixing continued for one and a half to two minute time resulting a concrete of a uniform colour and consistency.

If there is segregation after unloading from the mixture the concrete should be remixed. 2.2.6 Water Cement Ratio: The water cement ratio shall be carefully controlled throughout

the work, these calls for regular check on the equipment used measuring water. Only graded litre cans shall be used for this purpose.

2.2.7 Concrete should not be dropped from height greater than 2 M. Properly constructed chutes shall be used in such cases where it is necessary to exceed this height. Concrete must be thoroughly worked in to the forms so that they are entirely filled, reinforcing bars adequately and tightly surrounded and entrapped air released from the mass of concrete. Placing shall be carried out by hand punning as well as vibrators. Concrete should not be moved any considerable distance in the moulds, being consolidated as nearly as possible in the place where it is dumped. In casting beams or other deep sections concrete shall not be placed in layers.

2.2.8 Transportation: Concrete should be placed in its final position within 30 minute of mixing. The contractor shall arrange the mixer position and adopt a method of transportation so as to ensure that this period is not exceeded under any circumstances. Transportation shall be smooth and free from jolting.

2.2.9 CONSOLIDATION: All plain and reinforced concrete shall be consolidated by means of mechanical vibration. Adequate number of vibrators shall be used to ensure full compaction of concrete in about 10 minutes of placing. If needle vibrators are used, these shall be inserted at place not exceeding 0.5 M. apart until it is immersed to the full depth of concrete. Where ever possible shutter vibrators shall be used and the contractor shall design the shuttering so that this can withstand vibration. Care shall be taken to ensure that concrete is not over vibrated so as to cause segregation. In addition to mechanical vibration, sufficient hand tools must be used to ensure full consolidation against reinforcement and at edges and corners.

2.2.10 Construction Joints: Construction joints shall be made only where shown on the drawing or approved by the Architects. Such joints shall be kept to the minimum and shall not be located in valleys. The joints shall be at right angles to the direction of main reinforcement. In case of columns and walls the joint shall be horizontal and 2 to 5 cms. below the bottom of the beam or slab running into the column or wall head or below the anchor reinforcement of beam and slab coming into the column and wall and the portion of the column into wall between the stopping of level and the top on the slab shall be concreted with the beam or slab.

2.2.11 Testing:

Consistency: Only sufficient water shall be added to the cement and aggregate during mixing to produce a consistency so that the concrete shall be sufficiently workable to enable it to be well consolidated to be worked into the corners of the shuttering and around the reinforcement and to give the specified strength. Slump tests shall be carried out from time to time as directed by the Architects on concrete actually being placed in the works at the commencement of each period of concrete placing in accordance with the procedure laid down in the latest Indian Standards specifications.

The slump shall not exceed in limits specified for different items of works as given below or as directed.

a. Precast work 1" (25mm) slumpb. Footing & roads 3" (75mm) slumpc. Columns 3" (75mm) slumpd. Walls 3" (75mm) slumpe. Floor slabs 3" (75mm) slump

2.2.12 Preliminary Test: The Contractor will be called upon to submit representative samples

of materials to be used for concrete so that preliminary tests in accordance with I.S. 456- 1978 may be carried out in a recognized laboratory to establish the suitability of the materials and proportion of mix by weight proposed by the Contractor.

The contractor shall have to bear all costs in connection with this test.

2.2.14 curing of Concrete: All exposed faces of concrete shall be covered with Hussein, sand or similar material which shall be kept continuously wet for a period of at least 10 days after casting. After removal of Hussein or sand all concrete surfaces shall be well wetted at intervals for a period of at least three weeks.

2.2.15 Protections of completed Works: The contractor shall take suitable precautionary measures to prevent breaking and chipping of corners and edges of completed work.

2.2.16 Surface Finish of Concrete: All framework, centering and shuttering used for concreting shall be rigid and straight so as to produce all concrete members true to line and level with a tolerance of 1/8" (3mm).This shall be cast against an approved pattern made up of new material such as timber/steel/ply to give neat and exposed finish. No old shuttering material is allowed to site work.

2.3 FORM WORK

2.3.1 Form work shall be erected true to line and to the shapes required in the work and shall carry without deformation the full weight of wet concrete, and other live loads. It should also withstand the effect of vibration without deflection, bulging distortion or loosening of its component parts. The contractor shall be responsible for the sufficiency of the form work, centering and moulds. Form work shall be oiled thoroughly before concreting. Wire or similar ties shall not be left in concrete having face exposed to weather. Bolts shall be permitted if they are greased to allow for easy withdrawal and the holes subsequently made good.

The form work shall be designed so that the sufficient slabs and the side of beams may be removed first bearing form work to the soffit of beams and their supports inspection. Wedges shall be provided to allow accurate adjustment of form work and its easy removal.

All joints shall be tongued and grooved and sufficiently tight to prevent leakage of grout. Chamfer fillets shall be provided at all corners wherever called for on the drawings. The boards shall be planned and straightened in order that the surface against the corner shall not be coated with approved oil before it is fixed in position.

Clean out holes shall be provided at the bottom of all columns and pier form work and care shall be taken to remove any rubbish, wood shaving or any other foreign material before concreting temporary supports shall be provided as required and/or ordered by Architects. The contractor shall provide steel/plywood form work in place of timber boarding wherever called for by the Architects.

2.3.2 Removal of Form work: All form work shall be kept in position until the expiry of a minimum period after concreting as specified below:-

a. Forms supporting sides of beams, walls and columns. 2 daysb. Bottoms of slabs upto 15ft. (4.50 M) span. 7 daysc. Bottoms of slabs above 15 ft. (4.50 M) span to 20 ft. (6 M) span 10 daysd. Bottoms of beams upto 20 ft. (6.00) 14 dayse. Bottoms of beams over 30 ft. (6.00) span 21 days

After removal of form adequate props shall be provided to support beams/slabs until 28 days after concreting.

2.3.3 AGGREGATES

(1) Fine Aggregate: Colour being an important consideration, for exposed concrete, colour of sand used shall also be uniform throughout the entire construction. Preferably total quantity required for the work shall be collected and well mixed together to uniform shade.

(2) Coarse Aggregate: The colour of the aggregate shall be maintained the same throughout. Unless otherwise specified, exposed concrete in walls parapets and facias, which are non load bearing and are less than 120 mm in thickness, the maximum size of the coarse aggregate shall be limited to 12 mm. for which nothing extra shall be admissible. Flat or flaky pieces shall not be allowed.

2.3.4 Reinforcement & Cover of Concrete: Correct placing of the reinforcement with proper cover is important in all exposed concrete work to avoid discoloration by rusting. The minimum cover specified under specification for R.C.C. work shall be maintained throughout. Concrete blocks or spacers shall be sparingly used at exposed surfaces.

When used such blocks shall preferably be cast on vibrating table or in some other similar manner so that it may match the concrete surface in texture and colour. These shall be put at regular intervals. Cover blocks of materials other than cast blocks shall not be allowed to be used.

2.3.5 TIMBER SHUTTERING

Form work for exposed concrete work shall be of seasoned wrought hard wood timber planks, free from loose knots. The planks shall be 50 mm. thick, 100 to 125 mm. wide with tongued and grooved joints assembled to pattern approved by the Architects. The form work shall be so constructed, bracketed and stayed as to remain absolutely rigid and true during and after pouring. The boards shall be planed to thickness, so that the surface against the concrete shall not be broken at joint between boards. Chamfers, groove, mouldings, bevelled edges etc. shall be made in the form itself to the size, profiles and details called for on the drawings.

The Contractor shall provide 12 mm thick shuttering quality plywood of approved make or equivalent approved by the Architect in place of 40 mm thick timber plate shuttering mentioned above for such location as called for by the Architects. The joints in the plywood shuttering shall be located as directed by the Architects. Shuttering, centering and form work for all exposed concrete work like exposed column, beams, ribs, coffer, slabs, chajjas, facias, walls etc. shall be of such finish and rigidity as to produce all faces fair smooth true to line, level and plumb. No rendering or touching up shall be permitted on these faces.

2.3.6 STEEL SHUTTERING

Steel shuttering for exposed concrete work shall be made of shuttering plates of standard sizes and to suit the pattern of exposed concrete indicated in Architects drawings. The shuttering plates used will be made of steel sheets strengthened at the edges and in middle to prevent sagging or any deflection when concrete is laid. These plates will be free from any deformity or dents and should fit with each properly without any space or grooves being left between adjacent plates to avoid any leakage of concrete slurry. If any concrete, projects out between plates this will be neatly cut away.

The contractor shall be required to produce working drawings showing the general construction of form work and panels with details such as nail positions and holes for supports that may be required. Nail head shall be positioned as instructed by the Architects. Grooves and Chambers shall be formed as shown on the drawings without any extra cost.

Any holes for the supports, which the Contractor may need, shall be approved by the owner. All such holes shall be subsequently filled in carefully so as to match with the other surfaces. Walls, columns etc shall generally be cast to the full height in more operation and the form work shall put in accordingly. If permitted by the Architects, these may be completed in two or more heights when the form work shall be carefully and correctly raised for further height so as to ensure a neat joint without disturbing the pattern. Any groove required by the Architects at the joint shall be provided by the contractor at no extra cost.

iii. Coating for Shuttering: Burma shell shuttering oil, colorless and emulsifiable in water shall be used for oiling the wood work, when only thin film shall be neatly applied avoiding collection at one place. Any mark left by the shuttering oil shall be washed clean.

2.4 Measurements and Proportioning of Concrete materials:

This shall be as laid down generally for RCC work. In no case extra dust or sand or additional quantity of water shall be allowed with the intention of getting better finish which shall only be obtained by erecting centering as specified above and proper vibrating of the mix after placing. In no case, the slump limit, specified under the specification for RCC work shall be exceeded.

2.5 Mechanical vibration: All concrete for exposed concrete work shall be vibrated; using needle vibrators 30/32 mm. Surface vibrators may be permitted to be used for thin slabs. External vibrators for walls may be allowed but this shall be done carefully to safeguard the displacement of the shuttering. Vibrators shall only be operated by skilled labor, over or under vibration shall not be permitted. Any spillage or leakage, which is unavoidable and which flows down the exposed concrete surfaces shall be immediately washed away with clean water and brushed before setting. All finishing to the top surface of exposed concrete member shall be finished to desired surface while the concrete is still green.

2.6 Finishing: Exposed concrete surface shall on no account be permitted to any sort of repairs or patching after striking the form work. In the event of any portion not coming up to standard, this shall be taken down by the Contractor at no extra cost. Decision of the Owner as to the rejection of such work shall be final and binding on the Contractor.

2.7 REINFORCEMENT

a. Steel reinforcement shall be either mild steel of tested quality to IS 432-1960 or square or round twisted steel confirm IS 1786-61 or confirming to IS 1139-1966 as called for on the Drawings. Fabric reinforcement in topping slab or precast concrete units shall be of hard drawn mild steel wire-mesh, IRC weld mesh or other equivalent as approved. Bars shall be free from mill scale, excessive rust, oil or paint.

b. The contractor shall submit bar bending schedules for the approval of the Architects prior to commencement of fabrication. These will indicate the accurate dimensions and bending of bar as required on the structural drawings. Fabrication shall be accurately done to the dimensions, spacing and minimum cover as shown on structural drawings.

c. Fabrication shall be accurately done to the dimensions, spacing and minimum cover as shown on structural drawings.

d. All steel shall be rigidly held in place with 18 gauge annealed steel wire. Cement mortar (1:2) cubes, M.S. chairs and spacer bars shall be used in order to ensure accurate positioning of reinforcement.

e. All joints in Mild steel reinforcement up to and including 16 mm dia shall be over-lapped. f. The lengths of overlap for tension and compression joints shall be in accordance with the typical

detail. Joints in mild steel reinforcement above 16 mm diameter may be welded if permitted by the Architects in writing. All joints in to steel reinforcement shall be over- lapped strictly in accordance with typical drawing. The laps shall be as agreed in such a way that at one particular section not more than 25D of the bars is lapped.Measurements: The length of bars shall be measured correct to cm. of reinforcement placed in position as per drawings. Only such laps, dowels, chairs, spacer pins, as approved by the Architects or as shown on drawings shall be measured. All wastage such as cut piece etc. shall be included in rates and no extra amount shall be paid. In case of contractor's own supply, the weight of various diameter bars shall be as per standard ISI weight. No allowance shall be made for rolling margins.

2.7.1 Cover to Reinforcement: Cover shall be taken to maintain the correct cover to reinforcement. Unless otherwise specified on the drawing the following minimum covers (exclusive of rendering or other decorative finish) shall be provided in all reinforced concrete work.

2.8 Under water concreting: For under water concreting, the methods, equipment, materials and proportions of the mix to be used shall be submitted to and approved by the Project Manager before the work is started. The concreting operation shall be done as per provisions of 1 S 4560: 1978 (clause 13.2) under otherwise directed by the Project Manager.

2.9 All the reinforced cement concrete works shall be design mix concrete of M15 &M20 grade and or as specified. The contractor prior to commencement of concreting work and get the same approved in writing from the Project Manager.

2.10 DAMP PROOF COURSE (D.P.C.) D.P.C. shall be of thickness as shown in drawing or in the Bill of Quantities. Unless otherwise mentioned, proportion shall be 1 part of cement, two parts of sand and four parts of aggregate mixed with approved water proofing compound @3 by weight of cement or as per manufacturer's specification. Before lying the concrete, the top surface of the wall shall be thoroughly cleaned of all dirt and loose particles, mortar droppings and laitance if any, scrubbing with coin or steel wire brush or by hacking, if necessary. The surface is then thoroughly wetted and the concrete is placed. The concrete shall be laid in every case the full width of the plinth or as shown in drawing. The top surface shall be k.ept rubbed or rough or double chequered for adhesion of mortar for brickwork. Proper curing shall be done before starting the brick work over D.P.C.

SECTION -IIIMASONRY WORK

3.1 BRICK WORK

3.1.1 GENERAL

All brick work should be carried out as shown on the drawings with setbacks, projections, curvatures, cuttings, footings etc. No additional cost for use of cut bricks shall be allowed. Wherever the proportion of cement mortar has not been specifically mentioned, cement mortar in the proportion of 1:6 shall be used. Flat brick shall be provided wherever required without any extra cost Brick work shall be kept wet while in progress, till mortar has properly set. On holidays or when work is stopped, top of all unfinished masonry shall be kept covered. Should the mortar become dry or powdery, for want of curing, work shall be pulled down and rebuilt at the contractor's expenses.

3.1.2 BRICK MASONRY

3.1.3 SOAKING

All bricks shall be immersed in water for twenty four hours before being put into work so that they will be saturated and will not absorb water from the mortar.

3.1.4 BATS

No bats or cut bricks shall be used in the work unless absolutely necessary around irregular openings or for adjusting the dimensions of different course and for closures, in which case, full bricks shall be laid at corners, the bats being placed on the middle of the courses.

3.1.5 LAYING

The brick shall be laid in mortar to line, level &shapes shown on the plan, slightly pressed and thoroughly bedded in mortar and all joints shall be properly flushed and packed with mortar and not hollows left anywhere. Brick shall be handled carefully so as not to damage their edges. They should not also be thrown from any height to the ground, but should be put down gently. All courses shall be laid truly horizontal and all vertical joints made truly vertical. Vertical joints on one course and the next below should not come over one another & shall not normally be nearer than quarter of a brick length.

For battered faces beading shall be at right angles to the face. Fixtures, frames etc. if any, shall be built in at place shown in the plans while laying the courses only and not later by removal of bricks already laid. Care shall be taken during construction to see that edges of bricks at sills, heads etc. are not damaged.

The verticality of the walls and horizontally of the courses shall be checked very often with plumb bob and spirit level respectively.

3.1.6 Joints shall not exceed 10 mm (about 3/8") in thickness &this thickness shall be uniform throughout. The joints shall be raked out not less than 10 mm (about 3/8") deep when the mortar is green where pointing is to be done. When the brick surface are to be plastered, the joints shall be raked to a depth of 5mm' when the mortar is green so as to provide good key to plaster.

3.1.7 UNIFORM RAISING

Brick work shall be carried up regularly in all cases where the nature of work will admit, not leaving any part 60 cm. lower than another but where building at different levels is necessary, the bricks shall be stepped so as to give later an uniform level & effective bond. Horizontal courses should be to line and level, and face plumb as shown on the plan.

3.1.8 SCAFFOLDING

The scaffolding must be strong and rigid stiffened with necessary cross bearers and always decked and beared on the sills with closed board ceilings and swings to prevent injury to persons or materials. The Contractor shall have to allow other trades to make reasonable use of his scaffolding as directed by the Project Manager. If for the interest of work the contractor have to erect scaffolding in the other properties including local bodies or Corporation. The arrangement for the same including the cost of licensing fees etc. shall to be borne by the Contractor and the Owner should be kept free from any liability on this account. Put-log holes shall be made good by bricks to match the face work when put logs are removed after ensuring that the holes behind are solidly filled in the 1:4:6 cement concrete.

All brick works shall be kept well watered for 14 days after laying. If white pozzolana cement is used for mortar, the curing shall be extended by one week at contractor's expenses.

3.1.9 HALF BRICK WORK

The mortar mix for half brick and 75 mm thick brick work shall be as specified. Half brick and brick on edges work shall be provided with MS 6mm dia steel reinforcements. 3.1.10. Joints shall not exceed 10 mm (about 3/8") in thickness &this thickness shall be uniform throughout. The joints shall be raked out not less than 10 mm (about 3/8") deep when the mortar is green where pointing is to be done. When the brick surfaces are to be plastered, the joints shall be raked to a depth of 5mm when the mortar is green so as to provide good key to plaster.

SECTION -IVWATER PROOFING

4.1 Water Proofing in Toilets, Pantries etc.: The work shall be carried out by an experienced specialist waterproofing contractor who shall be appointed only after prior approval of the Project Manager.

4.1.1 Materials

4.1.1.1 Polymer

A. The polymer shall be Acrylic based Polymer Modified Cementitious Composite Coating system, as manufactured by CICO Technologies India Ltd., under the brand name 'TAPECRETE P: 151 POLYMER' or approved equal.

B. The cement shall be 'white cement', conforming to IS: 8042

C. The Epoxy shall be "Techoxy", a water thinnable epoxy manufactured by Choksey Chemicals Ltd., or equivalent as approved by engineer in-charge.

4.1.2 Execution

4.1.2.1 Surface Preparation

A. Clean all RCC surfaces to remove all dust, foreign matters, loose particles or any deposits of contaminants which could affect the bond between the RCC surfaces and waterproof coating.

B. Remove all sharp projections and make surface reasonably smooth.

C. Plaster all brick wall surfaces with 12mm thick 1 : 4 plaster (1 part cement: 4 parts course sand) up to a height of 300mm above the proposed floor finish level.

D. Thoroughly pre-wet all surfaces at least one hour prior to application of tapecrete coating.

E. Remove all water from surfaces prior to placing tapecrete coating so that the surface is only damp or surface dry. Standing water or shiny water surface shall not to present under any circumstances.

4.1.2.2 Application:-

A. For toilets and other such wet areas: i) Apply a coat of neat cement slurry primer admixed with impermeable

compound CH-09 or approved equivalent.

ii) Apply first coat of tapecrete polymer admixed with white cement in the ratio 1 : 2 (one part tapecrete : 2 parts white cement)

iii) Apply second coat of tapecrete polymer admixed with white cement in the ratio 1: 2 (one part tapecrete : 2 parts white cement)

iv) Seal all corners of floor / walls, junctions of pipes / walls etc. with Epoxy putty.

v) Apply final coat of tapecrete polymer admixed with white cement in the ratio 1: 2 (one part tapecrete : 2 parts white cement)

B. For water tanks and other water bodies:

i) In addition to the waterproofing treatment of the toilets, an extra putty coat of tapecrete polymer admixed with white cement and silica powder shall be applied on the entire surface to the water bodies.

4.1.2.3 Curing

A. After application of final coat of tapecrete, allow to air dry for 6-10 hours. Do not use any water for curing during this time.

B. Moist cure for 24 hours by sprinkling water.

4.1.2.4 Testing

A. The treated area of water proofing shall be tested by allowing water to stand on the treated areas for a minimum period of 72 hours.

4.1.2.5 Protection

A. Upon completion of the waterproofing application, the treated areas shall be protected with 12mm thick cement plaster 1:5 (1 cement: 5 coarse sand) mixed with water proofing compound.

4.2 Water Proofing On Terrace

The work shall be carried out by an experienced specialist waterproofing contractor who shall be appointed only after prior approval of the Project Manager.

4.2.1 Materials

4.2.1.1 Modified Bitumen sheet membrane shall be Atactic Polypropylene (APP), 1.5 m thick and weighting 2.25 kgs I sqm, manufactured by M/s. Bengal Bitumen or approved equivalent.

4.2.1.2 Bitumen / asphalt used shall be blown bitumen of grade 85/25 or 90/15 as per IS: 702.

4.2.1.3 Bituminous primer shall confirm to IS: 3384.

4.2.1.4 Fibre glass tissue shall be of nominal mass 45 gm/cm2 manufactured by M/s. U.P. Twiga fibre glass Ltd. or approved equivalent.

4.2.1.5 Hessian base bitumen felt shall be type 3 grade I confirming to IS: 1322.

4.2.2 Guarantee

A. The waterproofing work shall be guaranteed for 10 years after date of substantial completion. Submit guarantee in manner and from acceptable to the Project Manager.

4.2.3 Execution

4.2.3.1 Inspection of Substrate

A. Examine substrate surfaces to receive built up roofing system and associated work and conditions under which roofing will be installed. Do not proceed with roofing until unsatisfactory conditions have been corrected in a manner acceptable to the Project Manager.

4.2.3.2 Surface Preparation

A. Clean surface to remove all foreign matters, loose particles, remove all sharp projections and make surface reasonably smooth.

B. Make a gola (fillet) 50 mm x 50 mm at the junction of roof and parapets.

4.2.3.3 Roof membrane Installation

A. Water proofing of horizontal surfaces:

The waterproofing shall be applied as follows:

1. A coat of bitumenous primer. 2. A coat of blown bitumen 85/25 or 90/15 shall be applied @ 1.5 kg 1 sqm. 3. A roll of Modified Bitumneous membrane shall be unrolled over the bitumen surface

and completely bonded to the substrate by pressing down evenly for the full width of the roll.

4. The side overlaps shall be 75 mm whereas the end overlaps shall be 100 mm; both shall be further sealed with hot bitumen.

5. Second coat of blown bitumen 85/25 or 90/15 shall be applied @ 1.5 kg 1 sqm. 6. A roll of Modified Bitumneous membrane shall be unrolled over the bitumen surface

and completely bonded to the substrate by pressing down evenly for the full width of the roll. The side overlaps shall be 75 mm whereas the end overlaps shall be 100 mm; both shall be further sealed with hot bitumen.

7. Third coat of blown bitumen 85/25 or 90/15 shall be applied @ 1.5 kg 1 sqm. 8. A roll of Modified Bitumneous membrane shall be unrolled over the bitumen surface

and completely bonded to the substrate by pressing down evenly for the full width of the roll. The side overlaps shall be 75 mm whereas the end overlaps shall be 100 mm; both shall be further sealed with hot bitumen.

9. The joints in all the layers of Modified Bitumenous Membrane are staggered. 10. The membrane shall be properly overlapped 1 terminated at all openings, rainwater

down takes etc. to ensure that such junctions do not become sources of leakage.

B. Water proofing of Vertical surfaces at roof level:

The water proofing shall be applied as follows:

1. A chase min 50 mm deep shall be cut in the wallsl parapets at a height of minimum 150mm above the proposed roof finishing level for tucking in of vertical waterproofing treatment.

2. A coat of bitumenous primer. 3. A coat of blown bitumen 85/25 or 90/15 shall be applied at the rate of 1.5 kg .I sqm. 4. A layer of hessian based felt shall be laid and completely bonded to the substrate by

pressing down evenly for the full width of the roll. 5. Second coat of blown bitumen 85/25 or 90/15 shall be applied at the rate of 1.5 kg .I

sqm. 6. A layer of Modified Bitumenous Membrane shall be laid and completely bonded to the

substrate by pressing down evenly. 7. Third coat of blown bitumen 85/25 or 90/15 shall be applied at the rate of 1.5 kg.l sqm. 8. A layer of Modified Bitumenous Membrane shall be laid and completely bonded to the

substrate by pressing down evenly. 9. The joints of all the three layers shall be staggered with 75 mm side laps and 100mm

end laps respectively. 10. All the three layers shall be overlapped with the treatment for the horizontal surface by

at least 100 mm and also tucked inside the chase.

4.2.4 Testing

A. The treated area of waterproofing shall be tested by allowing water to stand on the treated areas to a depth of 100 mm for a minimum period of 72 hours.

4.2.5 Protection of Roofing

A. Upon completion of roofing and testing, the roofing should be protected with min 50mm thick screed 1:4:8 (with 12mm and down size stone aggregate) laid to slope and finally tiles etc.

4.3 Brick Bat Coba Roof waterprooing

The work shall be carried out by an experienced specialist waterproofing contractor who shall be appointed only after prior approval of the PM.

4.3.1 Materials

4.3.1.1 Brick Bat shall be of half brick or as approved by the PMC.

4.3.1.2 Water Proofing Compound shall be Cico No.1 or approved equivalent.

4.3.1.3 Cement shall be 43 grade.

4.3.2 Guarantee

A. The waterproofing work shall be guaranteed for 10 years after date of substantial completion. Submit guarantee in manner and from acceptable to the PM.

4.3.3 Execution

4.3.3.1 Inspection of Substrate

A. Examine substrate surfaces to receive built up roofing system and associated work and conditions under which roofing will be installed. Do not proceed with roofing until unsatisfactory conditions have been corrected in a manner acceptable to the PM.

4.3.3.2 Surface Preparation

A. Clean surface to remove all foreign matters, loose particles, remove all sharp projections and make surface reasonably smooth.

B. Make a gola (fillet) 50 mm x 50 mm at the junction of Vertical and horizontal surfaces ..

4.3.3.3 Brick Bat Installation

A. Water proofing of horizontal surfaces:

The waterproofing shall be applied as follows:

1. A layer of 20mm thick cement mortar 1:4(1 cement: 4 coarse sand) mix with acrylic based water proofing compound.

2. A layer of broken bricks (coba) with gaps of 15-20mm between broken bricks including preparation of necessary gradient as required draining off the surface water.

3. Filling the joints of coba with cement mortar 1:4 (1 cement: 4 coarse sand) mixed with acrylic based water proofing compound.

4. Apply the above 1, 2 &3 operation to achieve desired levels as per drawing. 5. Apply a layer of 20mm thick cement mortar 1:4(1 cement: 4 coarse sand) mix with

acrylic based water proofing compound. 6. Cure and test the above treatment for 7 days by ponding.

B. Installation of Insulation

P-Quality Thermocole sheet of density 40kg/cum Insulation shall be laid directly on top of the waterproofing treatment as follows:

1. A coat of blow bitumen shall be applied @ 1.5 kg /sqm on the dried water proof surface.

2. P Quality thermicole sheet of 50 mm thickness (Density 40 kg / cum) shall be pressed in the above layer of hot blown bitumen.

3. Two layer of alkanthene sheet 200microns shall be laid on thermocole spot stuck with bitumen and joints overlapped and sealed with bitumen.

4.3.3.4 Protection of Roofing

A. Upon completion of roofing and testing, the roofing should be protected with 100mm (avg.) thick screed 1 :2:4 (with 12mm and down size stone aggregate) laid to slope and finally tiles etc

SECTION - VWOODWORK

5.0 WOOD WORK

5.1 MATERIAL

5.1.1 WOOD

A. Generally wood for all Architectural woodwork shall be African Teak. B. Rough carpentry associated with the work of wood doors and windows shall be hollock /

Kail as mentioned in nomenclature. C. The moisture content of wood shall be in conformance to IS : 287 and shall generally be

between 12 to 14.

D. 1. All wood shall be heartwood from mature trees, of the best grade, with minimum sapwood, free of defects, selected for good finished appearance.

D. 2. All grades of wood with the following defects shall be prohibited for us :

a) Timber with loose grain, splits, compression wood in coniferous timber, heartwood-rot and sap-rot and warps.

b) Worm holes and pitch pockets. c) Wanes combined with knots. d) Wood that has been badly stored and damaged.

5.1.2 WOOD VENEERS AND PLYWOOD

A. Wood veneered plywood shall be 4 mm. thick of an approved manufacturer. Veneered plywood shall be selected from the best quality new stock for grain and colour appearance.

B. Plywood shall comply with IS: 5509 and IS: 5539.

5.1.3 ADHESIVES AND FASTENERS

A. Adhesives shall be synthetic resin adhesive complying with IS: 851. B. Screws shall be brass. C. Copper wire nails shall be in compliance with IS: 725.

5.1.4 TREATMENT AGAINST DECAY AND INSECT ATTACK

A. Treatment against and insect attack shall be by means of an approved proprietary product, proven to have outstanding durability under any conditions of exposure, to provide long-lasting protection against decay producing fungi and insects.

B. The material used for treatment shall be clean, oil-free odorless and harmless to people, plants and animals, even when exposed to fire.

C. The material shall be pressure impregnated for deep-penetration, fibre-fixed to prevent

leaching. The treated wood shall be capable of being subsequently painted or stained without being discolored.

D. No coal-tar based products shall be used for preservative treatment.

E. The material used for preservative treatment shall be compatible with the material used for fire retardant treatment.

F. The Contractor shall submit a guarantee for the effectiveness of the treatment over a minimum period of 5 (five) years from the date of final completion.

G. All wood covered by this specification shall be treated.

5.1.5 FIRE RETARDANT TREATMENT

A. Fire retardant treatment of wood shall be by means of an approved proprietary product, proven to have outstanding durability under any conditions of exposure, to provide effective retardant treatment against fire. The material shall react chemically at temperatures below the ignition point of untreated wood to reduce flammable vapors emitted by wood and form a protective char while retaining the wood underneath structurally sound.

B. The material used for treatment shall be clean, oil-free, odorless and harmless to people, plants and animals, even when exposed to fire.

C. The materials shall be pressure impregnated for deep-penetration, fiber-fixed to prevent leaching. The treated wood shall be capable of being subsequently painted or stained without being discolored.

D. The material used for fire retardant treatment shall be compatible with the material used for preservative treatment.

E. Surface spread of flame classification of IS: 476 Part 7. F. The Contractor shall submit for the effectiveness of the treatment over a minimum period of 5

(live) years from the date of final completion. G. All wood covered by this specification shall be treated.

5.1.6 GLASS

A. Glass: All glass shall be float glass of glazing quality conforming to 8S:952, Part 1 or other acceptable standard.

B. Glass and sizes and thickness shall be as shown on the Drawings. C. All glass shall bear the label of its manufacturer and the standard to which it is manufactured. D Glazing components: These shall be clear silicone sealant.

5.1.7 WEATHER STRIPS

A. The weather strips to seal the perimeter gaps between sashes and frames shall be flexible vinyl or synthetic rubber suitable for heavy duty application.

B. Sealant caulk for sealing joints between frames and structural openings shall be a one- part polysulphide sealant suitable for application by a caulk.... gun.

5.2 EXECUTION

5.2.1 GENERAL

A. The fire retardant and preservative treatment of wood shall be performed after conversion of lumber to the required sizes in construction, so as to keep subsequent working on them to a minimum. Brush apply two heavy coats of the same wood preservative and fire retardant chemical to any surfaces which were exposed by cutting, sawing, drilling etc.

B. Set out all doors and window accurately in accordance with the Contract Drawings or approved shop drawings, true to location, dimensions, line and plumb.

C. Ensure that dimensions of rough openings provided in walls and partitions are correct for the jamb, head and sill detail build-up including sub-frames, finished frame thickness and working tolerance, in order to install the required size of sashes. Make corrections in rough openings as required prior to installation of sub-frames and frames.

D. All members shall be in continuous lengths between supports without any intermediate joints or splices unless otherwise shown on the drawings.

E. All sizes shown on the drawings are the finished dimensions and shall be within the tolerance given below: 1. for measurement up to and including 100mm in width or thickness - ± 0.5mm. 2. for measurement above 100mm in width and thickness - ± 0.5mm.

F. Generally, the finished door and window frames are designed to be installed after the completion of wet trades such as masonry and plastering. Rough frames shall be installed with masonry and fixed in placed by means of mild steel hold fasts, at least four to each side.

5.2.2. SUB FRAMES

A. Sub Frames shall be of the size shown on drawings and shall be securely fixed to the wall and partition masonry or framing studs as applicable true to lime, plumb and alignment. Ensure that adequate working tolerance is provided for the installation of door and frames.

5.2.3 DOOR AND WINDOW FRAMES

A. Door and window frames shall be of the sizes and sections shown on the contract drawings.

B. Frames shall be fixed in place after the completion of all wet trades such as masonry plastering and filling in order to avoid wetting and damage of frames by plaster dropping etc. Frames shall be square and fully framed and joined and provided with temporary bracing to prevent

distortion during direction. Secure frames to sub-frames by screws penetrating at least three fourth the thickness of sub-frames at 500 mm centre all round. Counter - sink the head screws neatly at least 3 mm below the wood surface. Install the frames accurately with reference to finished wall surfaces as shown in the detail, true to line, plumb and alignment.

C. The panel frames shall be joined by "a\\ wood" joints without metal fasteners by means of the most appropriate glued mortice and tenoned joints and wood pins, Mortises and tenons shall be tooled to obtain intimate contact between their surfaces and shall be fully glued with glue. Joints shall be tightened with vice, clamps, draw straps or other means to obtain tight, indiscernible joints; the grain of wood pins shall match the surface grain of the frames.

D. After assembly the joints shall be tooled and sanded to remove minor unevenness at joints.

E. Planted moldings and architraves shall be fixed by means of headless-nails, neatly punched below the surface of wood.

5.2.4 WOODEN FLUSH DOOR SHUTTERS (SOLID CORE TYPE) :

Solid Core Flush shutters shall be of commercial or teak veneered type as specified in the approved make list. An approved sample shall be deposited in the office of the Architects / Project Manager on site for reference. The shutters will be provided with teak / steam beech wood lipping finished thickness of the shutter shall be as mentioned in the item.

5.2.5 FIXTURES & FASTENINGS:

Unless otherwise specified in the Schedule of Quantities, each shutter shall be hung with four brushed steel or other metal but hinges of approved quality size and make with brushed steel or other metal screws and the Contractor's shall cover for providing and fixing hinges to the shutters.

5.2.6 GLAZED SHUTTERS: Paneled shutters with African Teak Wood styles and shall be hung with four brushed steel or other metal but hinges of approved quality size and make with brushed steel or other metal screws and the Contractor's shall cover for providing and fixing hinges to the shutters. 5 to 6 mm thick clear glass shall be fixed to the style with wooden beading.

5.2.7 FITTINGS:

All hardware fittings and fixtures shall be as per schedule of fittings and of heavy quality as approved by the Architects.

SECTION-VIFLOORING & DADO WORKS

6.1 IPS FLOORING LAID IN SITU

6.1.1 General: The total thickness of floor shall be 40 mm. Thickness of the under layer shall be 30mm mm and shall be measured correct to a mm. Thickness of the top layer shall be 10 mm, and not be less than specified.

6.1.2 Fixing Dividing Strips: The divider strips as specified in the item shall be fixed on the base to the surface level of floors so as to form panels of required size and pattern. The panels shall be of uniform size not exceeding 2 sqm in area and 2m in length for inside situations. In exposed situations the length of any side of the panel shall not be more than 1.25 meters.

6.1.3 Laying: Cement concrete shall be placed in the panels and be leveled with the help of straight edge and trowel and beaten with a wooden 'Thapy' or mason's trowel. The blows shall be fairly heavy in the beginning but as consolidation takes place, light rapid strokes shall be given. Beating shall cease as soon as the surface is found covered with a thin layer of cream of mortar. The evenness of the surface shall be tested with straight edge and made true to required slopes. While laying concrete, care shall be taken to see that the strips are not damaged / disturbed by the laborers. The tops of strips shall be visible clearly after finishing with cement slurry. The finishing of the surface shall follow immediately after the cessation of beating. The surface shall be left for some time; till moisture disappears from it or surplus water can be mopped up. Use of dry cement or cement and sand mixture sprinkled on the surface to stiffen the concrete or absorb excessive moisture shall not be permitted. Excessive trawling shall be avoided.

Fresh cement shall be mixed with water to form thick slurry and spread at the rate of 2 kg of cement over an area of one sqm of flooring while the flooring concrete is still green. The cement slurry shall then be properly processed and finished smooth. The edges of sunk floors shall be finished and rounded with cement mortar 1:2 (1 cement: 2 coarse sand) and finished with a floating coat of neat cement. The junction of floor with wall plaster, dado or skirting shall be rounded off where so specified.

6.1.4 Curing: The entire surface is to be cured by means of wet bar lap or by covering with curing compound. Curing shall start after five hours and continued up to 24 hours.

6.1.5 Cement Plaster Skirting In-situ: The height of skirting shall be as specified in the drawings and shall be recessed from the surface of plaster by 2 mm. The work shall be carried out simultaneously with the laying of floor. The junction of skirting with the floor shall be neatly rounded to a radius of 15 mm unless specified otherwise.

6.1.6 CLEANING AND PROTECTION

When all construction and finishing work, including painting, joinery, electrical and plumbing works etc. are completed and just before the area is handed over, the floor shall be worked clean with water and dried.

6.2 TILES IN FLOORING AND DADO

6.2.1 PREPARATION OF SURFACES

The joints shall be raked out to a depth of at least 15 mm in masonry walls, while the masonry is being laid. In case of concrete walls, the surfaces shall be chipped and roughened with wire brushes. The surface shall be cleaned thoroughly, washed with water and kept wet before skirting work is commenced.

6.2.2 LAYING 12mm thick plaster of cement mortar 1:4 (1 cement: 4 coarse sand) of mix or as specified shall be applied and allowed to harden. The plaster shall be roughened with wire brushes, or by scratching. The tiles should be soaked in water, washed clean &a coat of cement slurry applied liberally at the back of tiles &set in the bedding mortar. The tiles shall be tampered &corrected to proper plane &lines. The tiles shall be set in the required pattern and butt jointed. The joints shall be as fine as possible. Top of skirting or dado shall be truly horizontal and joints truly vertical except where otherwise indicated. Skirting &dado shall rest on the top of the flooring. Where full size tiles cannot be fixed these shall be cut (sawn) to the required size and their edges rubbed smooth.

6.2.3 CURING AND FINISHING The joints shall be cleaned of the grey cement grout with wire brush or trowel to a depth of 2 mm to 3 mm &all dust &loose mortar removed. Joints shall then be flush pointed with white cement added with pigments if required to match the colour of tiles. The surfaces shall then be kept wet for seven days. After curing the surface shall be washed and finished clean. The finished work shall not sound hollow when tapped with a wooden mallet.

6.2.4 TECHNICAL SPECIFICATIONS

Characteristics IS 13755 Requirements (EN 177B11a)

1. DIMENSIONS & SURFACE QUALITY

a) Deviation in length ±0.5b) Deviation in thickness ±5.0c) Squareness ±0.5d) Straightness of sides ±0.5e) Surface flatness ±0.5f) Surface quality Min. 95% of tiles should be free from defects

2. PHYSICAL PROPERTIES a) Water Absorption 3-6

b) Bending Strength ~ 220kg/cm2

c) Scratch Resistance (Moh's Scale) Min.5

d) Resistance of surface to be specified by theAbrasion manufacturer

e) Crazing Resistance Min. 2 cycles

3. CHEMICAL PROPERTIES

a) Resistance to staining Min. class-2b) Resistance to household Min. class-B

Chemicals

4. THERMAL SPECIFICATIONS

a) Thermal Shock Resistance Resistance to 10 cyclesb) Thermal Expansion Max 9x10-6K-1 at 100°C

6.3 MARBLE STONE FLOORING

6.3.1 DRESSING OF SLABS

Every stone shall be hand/machine cut to the required size and shape, fine chisel dressed on all sides to the full depth so that a straight edge laid along the side of the stone shall be fully in contact with it. The top surface shall also be fine chisel dressed to remove all waviness. The sides and top surface of slabs shall be machined rubbed or table rubbed with coarse sand before paving. All angles and edges of the marble slabs shall be true, square and from chippings and the surface shall be true and plane. The thickness of the slabs shall be as specified in the description of the item. Tolerance of +- 2mm shall be allowed. In respect of length and breadth of slabs a tolerance of ± 3mm will be allowed.

6.3.2 LAYING

Sub-grade concrete or the RCC slab on which the slabs are to be laid shall be cleaned, wetted and mopped. The bedding for the slabs shall be with cement mortar 1 A (1 cement A coarse sand) or with lime mortar (1 lime putty: 1 surkhi: 1 coarse sand) as given in the description of the item.

The average thickness of the bedding mortar under the slab shall not be less than 12mm preferable 20mm The slabs shall be laid in the following manner:-

Mortar of the specified mix shall be spread under the area of each slab, roughly to the average thickness specified in the item. The slab shall be washed clean before laying. It shall be laid on top, pressed, tapped with wooden matted and brought to level with adjoining slabs. It shall be lifted and laid aside. The top surface of the mortar shall then be corrected by adding fresh mortar at hollows. The mortar is allowed to harden a bit and cement slurry of honey like consistency shall be spread over the same at the rate of 4.4kg of cement per sqm. The edges of the slab already paved shall be buttered with grey or white cement with or without admixture of pigment to match the shade of the paved slab. It shall then be lowered gently back in position and tapped with wooden mallet till it is properly bedded in level with and close to the adjoining slab with as fine a joint as possible. Subsequent slabs shall be laid in the same manner. After each slab has been laid, surplus cement on the surface of the slabs shall be cleaned off. The flooring shall be cured for a minimum period of seven days. The surface of the flooring as laid shall be true to levels and slopes as instructed by the Architect I Project Manager.

The slabs shall be matched as shown in drawings or as instructed by the Architects/Owner. Slabs which are fixed in the floor adjoining the wall shall enter not less than 12mm under the plaster, skirting or dado. The junction between wall plaster &floor shall be finished neatly and without variation.

6.3.3 POLISHING AND FINISHING

Slight unevenness at the meeting edges of slabs than be removed by fine chiseling and finished in the same manner as specified above.

6.4 MARBLE STONE IN SKIRTING, DADO, RISERS, STEPS ETC.

6.4.1 STONE:

The stone shall be cut into slabs of the specified thickness along the' planes parallel to the natural bed of granite.

6.4.2 Cramps:

Cramps shall be 25x6mm and length as per requirement made out of stainless steel ,gun metal or any other metal specified. Cramps shall be spaced not more than 600mm apart horizontally. The adjoining stones shall be secured to each other by means of copper pins 75mm long and 6 mm diameter or as specified.

The facings shall be provided with a continuous support on which the stones rest at the ground level and other storey levels, the support being in the form of projection from or recess into the concrete floor slab or a beam between the columns or a metal angle attached to the floor slab or beams. These supports shall preferably be at vertical intervals not more than 3.5m apart and also the heads of all openings.

6.4.3 LAYING:

The stone shall be wetted before laying. They shall be then fixed with mortar in position without the use of chips or underpinning of any sort. The walls shall be carried up truly plumb. All courses shall be laid truly horizontal and vertical joints truly vertical. The stone shall break joints on the face for atleast half of the height of the course, unless otherwise shown in the drawings.

The backing shall be carried up simultaneously with the face of work. In case of reinforced cement concrete backing, the lining shall be secured to the backing after it has set and got cured. The cramps shall be fixed in concrete at the required positions, while laying.

The risers of steps and skirting shall be set in grey or white cement admixed with or without pigment to match the shade of the stone.

6.5 KOTA STONE FLOORING

6.5.1 DRESSING

Every slab 25 mm thick shall be cut to the required size and shape and fine chisel dressed on the sides to the full depth so that a straight edge laid along the side of the stone shall be in full contact with it. The sides (edges) shall be table rubbed with coarse sand or machine rubbed before paving. All angles and edges of the tiles shall be true, square and free from chipping and the surface shall be true and plane.

6.5.2 PREPARATION OF SURFACE AND LAYING

The sub-grade concrete or the R.C.C. slab on which the slabs are to be laid shall be cleaned, wetted &mopped. The bedding for the slabs shall be with 20 mm cement mortar 1:4 (1 cement: 4 coarse sand) or with lime mortar (1 lime putty: 1 surkhi : 1 coarse sand) as given in the description of the item except that the edges of the slabs to be jointed shall be buttered with grey cement, with admixture of pigment to match the shade of the slab.

6.5.3 POLISHING AND FINISHING

The day after the slabs are laid all joints shall be cleaned of the grey cement grout with a wire brush or trowel to a depth of 5 mm and all dust & loose mortar removed and cleaned. Joints shall then be grouted with grey or white cement mixed with or without pigment to match the shade of the stone slabs. The flooring thus laid shall be grounded evenly with machine. Final shall be done like mirror polishing.

SECTION - VIIFINISHING WORKS

7. FINISHING

7.1 SCAFFOLDING

Scaffolding for carrying out plastering work shall be double scaffolding having two sets of vertical supports so that the scaffolding is independent of the walls.

7.1.1 PREPARATION OF SURFACE

All putlog holes in brick work and junction between concrete &brick work shall be properly filled in advance. Joints in brick work shall be racked about 10 mm and concrete surface hacked to provide the grip to the plaster. Projecting burns of mortar formed due to gaps at joints in shuttering shall be removed.

The surface shall be scrubbed clean with wire brush/coir brush to remove dirt, dust etc. and the surface thoroughly washed with clean water to remove efflorescence grease and oil etc. and shall be kept wet for a minimum of six hours before application of plaster.

7.2 ORDINARY CEMENT PLASTER

The preparation of surface shall be as stated above. The thickness and preparation of plaster shall be as specified in the schedule of items. The mortar shall be applied evenly with force on the surface to be plastered. The mortar surface shall be finished at once by rubbed over with a trowel till the cement appears on the surface. All corners, angles and junctions shall be truly vertical &horizontal as the case may be neatly finished. Rounding of corners and junctions where required shall be done without extra charge. The mortar shall adhere to the surface intimately when set and there should not be hollow sound when struck.

7.3 SAND FACED PLASTER

The surface shall be prepared as above. The cast of cement mortar in proportion of 1:4 or as specified shall be applied uniformly allover the surface to the specified thickness and finished to level and line and keys shall be formed on the surface. The surface shall be kept moist till the finishing coat is applied. The finishing coat shall be applied a day to two after. The proportion of mortar for finishing coat shall be one part of cement and three parts of selected, well graded and washed sand &it shall be applied in a uniform thickness of 6 mm (1/4"). The surface shall be tapped to uniform grained texture by using sponge pads as directed. Curing shall start after 24 hours and the surface kept wet for seven days.

7.4 ROUGH CAST PLASTER

Except for the finishing coat the surface shall be prepared and base coat of plaster applied. Finishing coat of mortar shall be in proportion of one part of cement and one part of specially selected and graded sand and one part of gravel of 3 to 6 mm size. It shall be flung upon the first coat with large trowel size to form an even and decorative coat. The work shall generally conform to clause 16.5 of 1.8. 1661-1960. The thickness of the coat shall be about 12mm (1/2"). It shall be cured for seven days.

7.5 CEMENT PAINT

7.5.1 PREPARATION OF SURFACE

For new work, the surface shall be thoroughly cleaned of all mortar dropping, dirt, dust, algae, grease and the foreign matter by brushing &washing. The surface shall be thoroughly wetted with clean water before the cement paint is applied. In the case of old work, all loose pieces and scales shall be cleaned of all dirt, dust, algae, oil etc. by brushing &washing. Pitting in plaster shall be made good and a coat of water proof cement paint shall be applied over patches after wetting them thoroughly.

7.5.2 PREPARATION OF MIX

Cement paint shall be mixed in such quantities as can be used up within a hour of its mixing as otherwise the mixture will set &thicken, affecting flow &finish. Cement paint shall be mixed with water in two stages. The first stage comprises of 2 parts of cement paint and one part of water stirred thoroughly &allowed to stand for five minutes. Care shall be taken to add the cement paint gradually to the water and not vice- versa. The second stage shall comprise of adding further one part of water to the mix and stirring thoroughly to obtain a liquid of workable and uniform consistency. In all cases the manufacturer's instructions shall be followed meticulously.

The lids of cement paint drums shall be kept tightly closed when not in use, as by exposure to atmosphere the cement paint rapidly becomes air set due to its hygroscopic qualities.

7.5.3 APPLICATION

The solution shall be applied on the clean and wetted surface above 1 coat of grey cement wash with brushes or spraying machine. The solution shall be kept well stirred during the period of application. It shall be applied on the surface which is on the shady side of the building so that the direct heat of the sun on the surface is avoided. The method of application of cement paint shall be as per manufacturer's specification. The completed surface shall be watered after the day's work.

The second coat shall be applied after the first coat has been set for atleast 24 hours before application of the second or subsequent coats, the surface of the previous coat shall not be wetted. For new work, the surface shall be treated with three or more coats of water proof cement paint as found necessary to get a uniform shade.

7.5.4 PRECAUTION

Water proof cement paint shall not be applied on surfaces already treated with white wash, colour wash, distemper dry or oil bound, varnishes, paints etc. It shall not be applied on gypsum, wood and metal surfaces. The specifications in respect in respect of scaffolding, protective measures, measurements and rate shall be as described under white washing with lime.

7.6 PRIMING COAT ON WOOD, IRON OR PLASTERED SURFACE

7.6.1 WOODEN SURFACE

The wood work to be painted shall be dry and free from moisture. The surface shall be thoroughly cleaned. All unevenness shall be rubbed down smooth with sand paper. Knots, if any, shall be covered with preparation of red lead made by grinding red lead in water and mixing with strong glue sized and used hot. Appropriate filler material with same shade as paint shall be used where specified.

The surface treated for knotting shall be dry before painting is applied. After the priming coat is applied, the holes and indentations on the surface shall be stopped with grazier's putty or wood putty. The primer shall be prepared on site or shall be of approved brand and manufacturer as specified in the item. Paint shall be anti-corrosive bitumastic paint, aluminium paint or other types of paint as specified in the description of the item. Stopping shall not be done before the priming coat is applied as the wood will absorb the oil in the stopping and the later is therefore liable to crack.

IRON AND STEEL SURFACE

All rust and scales shall be removed by scarping or by brushing with steel wire brushes. Hard skin of oxide formed on the surface of wrought iron during rolling which become loose by rusting, shall be removed. All dust and dirt shall be thoroughly wiped away from the surface. If the surface is wet, it shall be dried before priming coat is undertaken.

PLASTERED SURFACE

The surface shall ordinarily not be painted until it has dried completely. Trial patches of primer shall be laid at intervals and where drying is satisfactory, painting shall then be taken in hand. Before primer is applied, holes and undulations, shall be filled up with plaster of paris and rubbed

7.6.2 APPLICATION

The primer shall be applied with brushes, worked well in to the surface and spread even and smooth. The painting shall be done by brushing and laying off as described in cement paint above.

7.7 PAINTING WITH READY MIXED ISYNTHETIC ENAMEL PAINT

7.7.1 PAINTING ON NEW SURFACE

The surface which has not been painted earlier, or the paint has been removed by paint remover, burning, caustic soda etc. shall be considered to be new surface.

7.7.2 PREPARATION OF SURFACE

WOODWORK

The surface shall be cleaned and all unevenness removed as specified in wooden surface. Knots, if visible, shall be covered with a preparation of red lead. Holes and indentations on the surface shall be filled in with glazier's putty or wood putty and rubbed smooth before painting is done. The surface should be thoroughly dry before painting.

IRON AND STEEL WORK

The priming coat shall have dried up completely before removed by scrapping or by brushing with steel wire brushes. All dust and dirt shall be carefully &thoroughly wiped away.

PLASTERED SURFACE

The priming coat shall have dried up completely before painting is started. All dust or dirt that has settled on the priming coat shall be thoroughly wiped away before painting is started.

7.7.3 APPLICATION

The specification described in Cement Paint shall be hold good as far as applicable. The number of coats to be applied will be as stipulated in the item. The painted surface shall present a uniform appearance and glossy/matt finish described in Schedule of Quantities free from streaks, blisters etc.

7.8 DISTEMPERING WITH OIL BOUND DISTEMPER

Distempering with oil bound distemper shall be provided in accordance with CPWD Specifications 1992 and relevant standards applicable to this work. Paint shall be of approved brand and manufacture. One base coat of primer shall be applied on surfaces after preparing surfaces for distempering.

SECTION - VIIIALUMINIUM DOORS & WINDOWS

8.1 GENERAL

Aluminum doors, windows etc, shall be of sizes section details as shown on the drawings. The details shown on the drawings indicate generally the sizes of the components parts and general standards. These may be varied slightly to suit the standards adopted by the manufacturer. Before proceeding with any manufacturing the Contractor shall prepare and submit complete manufacturing and installation drawings for approval of the Project Manager and no work shall be performed until the approval of these drawings is obtained.

8.2 SHOP DRAWINGS

The Contractor shall submit the shop drawings of doors, windows, louvers, cladding and other aluminum work based on architectural drawings, to the Architect / Project Manager for their approval. The drawings shall show full size sections of doors, windows etc. thickness of metal (i.e. wall thickness), details of construction, sub- frame / rough ground profile, anchoring details, hardware as well as connection of windows, doors and other metal work to adjacent work. Samples of all joints and methods of fastening and joining shall be submitted to the Engineer in charge for approval well in advance of commencing the work.

8.3 SAMPLES

Samples of doors, windows, louvers etc shall be fabricated, assembled and submitted to the Architect / Project Manager for his approval. They shall be of sizes, types etc. as decided by Architect. All samples shall be provided at the cost of the Contractor.

8.4 SECTIONS

Doors and windows shall be fabricated from extruded section of profiles of detailed on drawings. The sections shall be extruded by the manufacturers approved by the Architect / Project Manager. The aluminum extruded sections shall conform to BIS designation HE9WP / HV9 WP, the chemical composition and technical properties as per IS: 733 and IS: 1285. The permissible dimensional tolerance of the extruded sections shall be such as not to impair the proper and smooth function/ operation and appearance of doors and windows.

8.5 CLEAR GLASS

Glass: All glass shall be float glass of glazing quality conforming to BS: 952, Part 1 or other acceptable standard. Glass and sizes and thickness shall be as shown on the Drawings. All glass shall bear the label of its manufacturer and the standard to which it is manufactured.

Glazing components: These shall be clear silicone sealant.

8.6 FABRICATION Doors, windows, etc. shall be fabricated to sizes as shown, at factory and shall be of section, sizes combinations and details as shown in the Architectural Drawings. All doors, windows etc. shall have mechanical joints shall be designed to withstand a wind load of 175 kgs per sqm or as per IS 875 whichever is more. The design shall also ensure that the maximum deflection of any member shall not exceed 1/175 of the span of the member. All members shall be accurately machined and fitted to form hairline joints prior to assembly. The joint and accessories such as cleats, brackets etc. shall be of such material as not to cause any bi-metallic action, the design of the joints and accessories shall be such that the accessories are fully concealed. The fabrication of doors, windows, etc. shall be done in suitable sections to facilitate easy transportation, handling and installation. Adequate provision shall be made in the door and window members for anchoring to support and fixing of hardware and other fixtures as approved by the Architect.

All mitered joints in the framework shall be crimped using an adequate insert and corners are to be sealed with metal corner sealant all straight joints to have EPDM flap gaskets at the joint to avoid water leakage all screws in the assembly and installation shall be fully concealed and made of stainless steel.

8.7 INSTALLATION

Just prior to installation the doors, windows, etc. shall be uncrated and stacked on edge on level bearers and supported evenly. The frame shall be fixed into position true to line and level using adequate number of expansion machine bolts, anchor fasteners of approved size and manufacturer and in an approved manner. The holes in concrete / masonry members for housing anchor bolts shall be drilled with an electric drill.

The doors, windows assembled as shown on drawings shall be placed in correct final position in this opening and marks made on concrete members at jamb, sills and heads against the holes provided in frames for anchoring. The frame shall then be removed from the opening and laid aside. Neat hole with parallel sides of appropriate size shall then be drilled in the concrete members with an electric drill at the marking to house the expansion bolts. The expansion bolts shall then be inserted in the holes, struck with a light hammer till the nut is forced into the anchor shell. The frame shall then be placed in final position in the opening and anchored to the support through cadmium plated machine screws of required size threaded to expansion bolts. The frame shall be set in the opening by using wooden wedges at supports and be plumbed in position. The wedges shall invariably be placed at meeting points of glazing bars and frames.

8.8 EPDM GASKETS

The Contractor shall provide and install EPDM gaskets of approved size and profile at all locations as shown and as called for to render the doors windows etc. absolutely air tight and weather tight. The Contractors shall produce samples of the gaskets for approval and procure after approval only.

8.9 FITTINGS

Hinges, stays handles, tower bolts, flush bolts, locks and other fittings shall be of approved make duly approved by the Project Manager / Architect.

8.10 CONTRACTOR'S ATTENDANCE

The Contractor immediately prior to the commencement of glazing shall adjust and set all windows and doors and accept responsibility for the satisfactory working of the opening frames.

8.11 SEALANT

The gaps between frames and supports and also any gaps in the door and windows section shall be raked out as directed and filled with silicon sealant of approved colour and make to ensure complete water tightness. The sealant shall be of such colour and composition that it would not stain the masonry/ concrete work shall receive paint without bleeding will not sag and shall not set hard and dry out under any conditions of weather. The samples of sealant to be used for this purpose shall be got approved by the Project Manager / Architect before its actual use.

8.12 DETAILS OF TESTS

The various tests on aluminum sections shall be conducted in accordance with the relevant IS codes. The samples of major member of each unit of doors/ windows shall be selected at random by Project Manager as such that all the aluminum section shall be got tested. The cost of samples, carriage of the samples and testing charges, if any shall be borne by the Contractor.

PREAMBLEGENERAL PREAMBLE

1. The B.O.Q's shall be read together with the specifications and drawings to fully understand the requirements. All the requirements of the specifications and drawings shall be deemed to be a part of every item in the B.O.Q's whether or not specifically stated. The rates quoted for any item shall be all inclusive, i.e., shall include for provisions and requirements of the specifications and drawings and shall comply with the requirements of Contract Documents.

2. Should the drawings, specifications or schedules disagree in them or with either or both of the others, the better quality or greater quantity of work or materials, as determined by the Architect/PM shall be performed and provided unless otherwise directed in writing by the Architect/PM. The discrepancies shall first be brought to the notice of the Architect/PM and work shall be performed as per his instructions.

3 The classification of various items of works for purposes of measurements and payments shall be as per bills of quantities (BOQ). Except where distinguished by BOQ the rates apply to all heights, depths, sizes, shapes and locations. They also cater for all cuts and wastes. No floor-wise separation shall be made for the rates. Likewise all heights of centering, shuttering, staging, formwork and scaffolding are covered by the rates including multi stage propping for heights greater than one floor as per drawings, unless otherwise specified.

4. Generally mode of measurement shall be in accordance with IS 1200 for all items except those for which it has been mentioned elsewhere.

5. Work shall be executed strictly in accordance with the Technical Specifications, and the rates quoted shall be all inclusive including compliance with their stipulations.

6. For items not covered by the specifications, the work shall be executed in accordance with relevant BIS specifications.

7. In the event BIS specifications do not cover an item, the work for that item shall be executed in accordance with the best Engineering Practice acceptable to the Architect/PM.

8. Specific preambles for each section of work are given along with the respective sections.

9. makes of approved products, manufacturers etc. are listed in order of preference. Prices shall be quoted based on the first preference. If during construction, the first preference is not available, or a decision is taken to opt for the second or any other preference, the benefit of cost differential shall accrue to the owner. If, however, the selected option is more expensive than the first preference, the work shall be carried out at the rates quoted in the Bill of Quantities, without any additional cost to the Owner.

10. For all civil works curved on plan to a mean radius exceeding 6 mtrs. shall be measure and included with general civil works. For civil works curved on plan to a mean radius not exceeding 6 mtrs. shall be measured separately and shall included in all cutting works, templates etc. It shall be measured as the mean length of the wall.

11. Contractors shall include in their quoted rates for pumping out the water collected due to run off or otherwise during construction.

12. The rates quoted by contractors shall be inclusive of all tools & plants, labor, material, all accessories required for intended performance of the item of work unless otherwise specified.

Preamble to Site Development and Earth work

1.0 Earthwork

1.1 Measurement for excavation shall be recorded only for the plan dimensions of the excavation plan provided by the Architects. In case dismantling of any underground existing structures / foundations is required during excavation, it shall be duly classified and paid for separately. Any excavations beyond the specified lines and levels shall not be paid unless felt appropriate by the PMC in the event that the same is deemed unavoidable.

1.2 For measurement of rocks stacks shall be made as directed. The net quantity of the rock shall be arrived at by applying deduction of 50 to allow for void in stacks.

1.3 For main building excavation over area" good for construction drawings" shall be issued and measurement shall be made as per the same.

1.4 The rates quoted for Earthwork shall include for:-

1.4.1 Royalty and other taxes payable.

1.4.2 Necessary measures taken for protection and all Services.

1.4.3 Removal of all foreign matter, stores, and brick bats if met during excavation.

1.4.4 Removal of rubbish arising from uprooting rank vegetation and weeds.

1.4.5. Maintenance of all required levels.

1.4.6 Watering

1.4.7 Compliance with all stipulation of Technical Specification.

1.5 The anti-termite treatment shall be carried out by an approved agency and shall carry at least 10 years guarantee duly counter signed by main contractor on an approved Performa on Rs. 50/- stamp paper.

2.0 Plain and Reinforced Cement Concrete

A. The rates quoted shall include for:- 1. Use of batching plant for all concrete (mandatory) 2 . Works at all height and depths" unless otherwise specified. 3. Admixtures for normal concrete as well as concrete required to be water proofed 4 Use of greater than minimum specified quantities of cement to achieve specified or

required mix design. 5. Making all drips, grooves, moulds, curved surfaces and edges etc. in concrete and/or

plasterwork as directed. 6. Forming all expansion and/or construction joints as directed. 7. All projections and ornamental works and finishing to shape as specified. 8. Making cutouts in RCC surfaces etc. 9. Hydrotesting of the liquid retaining structure including all arrangement for filling with

water, emptying after testing, including providing pipe lines, pumping systems etc. 10. Embedding all electric pipes, boxes, fan hooks false ceiling suspensions and inserts of

any other description etc., in RCC slab beam or column as directed. 11. Installing a calibrated electrically operated cube testing machine at site, getting it

calibrated every month and resubmitting a test report to Project Manager. 12. Preparing test cubes and testing them at site or in an approved laboratory. 13. Working up or hacking of concrete surface for providing keys for further concrete work

including applying thick cement slurry or mortar as directed. 14. Centering, shuttering and formwork, shuttering boxing propping etc. except wherever

specified to be excluded in the item. Shuttering to be made watertight if necessary including cost of nails, screws, etc. shall be included.

15. Special precautions for tall formwork upto 20 m. height or more, as required or directed.

16. Formwork required or as directed to distribute the dead and live loads of slabs to minimum of two floors below.

17. Use of shuttering oil as specified. 18. Use of cement slurry over shuttering before commencing concreting or on conc.slabs to

create bond between Plain / RCC surface and subsequent applied Finishes, such as Flooring, Plaster, dado, skirting etc.

19. Machine mixing, consolidating by rodding mechanically, vibrating and tamping, hoisting to all lifts and leads and curing as specified.

20. Sinking of floors in specified areas. 21. Providing authorized laps, chairs, spacers etc. wherever necessary. 22. Forming cutouts, openings and re-concreting at a later stage as necessary unless

otherwise specified. 23 Maintaining of POUR CARDS showing approval of Project Manager to concrete various

components of RCC frame. 24 Work in narrow widths, small quantities and curved alignment. 25 Removing rust, mill scales, oil grease, paint etc. from reinforcing bars. 26 Wastage due to cutting bars to required lengths. 27 Cost of 18 gauge annealed binding wire. 28 Providing cover to steel with cement concrete briquette spacers.

29 Payment of steel shall be made for weight actually placed in position as per design and drawing or as directed, as per B.1.8. No allowance shall be made for rolling margins or difference from standard weights.

30 Providing additional water bars as directed in construction joints other than those specified and shown in the drawings.

31. Wherever cement is mentioned in the contract document, it shall mean grey ordinary portland cement of grade 43 unless otherwise specified.

3.0 Brick Work/Stone Masonry

A. The rates quoted shall include for:- 1. All scaffolding, ladders, platforms, staging and plant required in the execution of work to

any height or depth. 2. Hacking and roughening of concrete or other surfaces in contact with masonry for

bondage. 3. Leaving out dowels from concrete members for anchorage. 4. Extra labor in beam filling. 5. Rough cutting and waste. 6. Raking out joints to specified depth either for plaster or finishing the joint flush as the

work proceeds, or as directed. 7. Setting anchor plates, lintels, cills etc. in or on walls, setting door frames, window

frames, and the like in cement mortar or through other means specified. 8. Holes (cut and formed or left) for fixing pipes, bolts and other inserts and making good

including grouting if necessary. 9. Forming chases for edges of concrete floors or other units, for sealing in waterproofing

layers etc. 10. Providing pre-cast cement concrete (1:2:4) at door jambs where required to receive

expansions bolts/holdfasts. 11. Building in holdfasts and such other inserts. 12. Work in pillars square &rounded. 13. Work at all heights, depths and locations unless otherwise mentioned. 14. Work in curve, circle or cut work to shape as shown. 15. Cavity wall construction, including providing necessary cramps ties. 16. Treatment and testing of surfaces for efflorescence. 17. Making provisions for anchoring Stone to Concrete or Brick Surfaces 18. Dressing of stone surfaces to required finish and providing grooves, rebates etc. to

receive anchors. 19. Making provisions for insulation / waterproofing as the work progresses.

4.0 Waterproofing

A. The rates quoted shall include for:-

1. Executions of water-proofing treatment through approved specialists in the field and under their direct supervision and strictly as per specifications.

2 Minimum 10 years warranty. 3. Testing of treated areas, as directed.

4 Treatment of down take pipes and other obstructions. 5 All cutting, dressing, trimming and waste. 6. Providing concrete fillet at the junction horizontal and vertical surfaces as per drawings. 7. Preparation of surface for water-proofing work, insulation and other related treatments. 8. Work in narrow widths, bands, strips and at all locations.

5.0 WOOD WORK

A The rates quoted shall include for :-

1. Seasoning as per specification of all wood members incorporated in the work. 2. All fiber or plastic plugs, screws, nails, pins, key and such other fixing accessories. 3. Hold fasts/cleats welded or screwed to frame, including embedding/anchoring to

concrete members. 4. Expansion bolts/raw plugs and machine screws for fixing to supports where called for. 5. Filling and finishing neat, gaps around frames of doors, windows, etc. with approved

sealant. 6. Providing required coating of wood preservative and fire-retardant paint to all

unexposed wooden surfaces including framing plywood, ply boards etc. and backs of exposed wood surfaces.

7. All items as included in the individual items in Bill of Quantities

6.0 Floor Finishes

A. Rates quoted shall include for:-

1 Use and waste of all temporary fillets, forms, templates, moulds, straight edges etc. 2 Washing of coarse aggregate in approved manner. 3 Final preparation of the base sub-grade or sub-floor. 4 Cleaning and watering the surface immediately before laying the floor if so directed. 5 Cutting, rubbing and polishing surfaces and edges where applicable. 6 Rounding of corners, edges and junction of floors with skirting or Dado and also cutting

recesses where required to accommodate recessed skirting. 7 Forming rounded recesses in floor. 8 Providing grooves. 9 Work in narrow width strips and to profiles shown and at all heights and locations unless

otherwise mentioned. 10 Curing, protecting and cleaning all finished surfaces as specified. 11 All relevant points specified in preamble for "Concrete work-plain and reinforced" shall

be applicable to all cement concrete work occurring under "Flooring and Paving". 12 Cost of finishing and polishing the exposed edges of stone work.

7.0 Finishes

A Plaster and other Finishes

The rates quoted shall include for:-

1. Work in narrow widths, cornices and small quantities unless otherwise mentioned. 2 Work on any surfaces such as bricks, concrete, stone etc. 3 Preparation of surface by hacking, racking out joints, wetting the surface etc. hacking of

concrete surfaces to receive complete plaster. 4 The thickness of plaster key in joints etc. and extra thickness of plaster over undulations

etc. 5 Arises, drips, grooves, chamfers of any width and depth, internal rounded angles,

external rounded angles, rounding of corners etc. 6 Providing chicken wire mesh below plaster at junction of differing base materials. 7 Providing grooves at the junction of plaster with other finishes and grooves between

different plaster surfaces. 8 Providing edge / corner beads as required or directed. 9 Scoring surface of plaster for key where the surface is not required to be finished fair. 10 Keeping the work well wetted for atleast 10 days. 11 Work at all heights depth and locations and use of scaffolding, ladders etc. necessary for

execution of work.

B Painting and Other Finishes

A The rates quoted shall include for:-

1. Work at all heights and use of all scaffolding trestles, ladders, cradles, etc. necessary for execution of work and for inspection.

2 Preparation of surface such as brushing, sand paper, scrapping, washing and rubbing etc. to receive finishing coats.

3 Puttying, sand-papering and dusting of surface in between coats where applicable. 4 Work on cornices, narrow width, bands etc.5 Providing additional coats of paint (in addition to the number, specified) in order to

obtain the result desired by the Architect. Nothing extra shall be payable on this account.

6 Spreading and removing covering to doors, window, floors, fitting etc. to protect them from splashes.

7 Washing floors, cleaning glass, joinery, electric fittings etc. of drops and splashes and leaving premises clean and tidy.

LIST OF APPROVED MAKES OF MATERIALS

1 White Cement - Birla, JK2 Chloropyrophos - Dhanwan 20 EC, Trishool 20 EC. 3 Shuttering ply - Century, D`1qquro, Green 4 Structural Steel - Tata, Sail 5 Dash fasteners - HILTI, DASH, BOSCH 6 Water proofing compound - Cico, Struco N , STP 7 Flush Door - Green ply, Century, Archid 8 Mirror - Modi 9 Laminate - Greenlam, Century, Formica 10 Veneer - Sun, Durian, Century 11 Glass - Asahi, Modi 12 Ply / board - Century, Duro, Green 13 Floor Spring - Everite , Dorking 14 Drawer Channel - Haffle (full extension telescopic) 15 Brushed steel Hardware - Suzu16 Door Closer - Everite , Dorking 17 Door Locks - Door Set, Godrej 18 Hard Wood - Best Quality Hollock Wood 19 Teak Wood - Best quality African teak wood 20 Fire Retardant paint - Navair 21 Adhesive for wood - Fevicol 22 Pressed steel frame - As per approved 23 PVC Strips - As per approved sample 24 Kota Stone - As per approved sample 25 White cement based putty for paints - Birla white putty 26 Marble Stone - As per approved sample 27 Paints - ICI, Asian, Berger, Shalimar, Nerolac, 28 Water Proof Cement Paint - Snowcem/ Supersnowcem29 Silicon Sealant - GE, Wacker 30 Polysulphide Sealents - Pidilite31 Expansion Joint Sealers - Master Builders Technologies., supreme 32 Aluminum - Jindal/ Hindalco 33 Masking Tapes - Suncontrol / Wonder Polymer 34 PVC sleeves for fixing of windows - Kundan/ Puja/ atul35 Stainless steel Friction stay - Earl Bihari/Exel36 EPDM Gaskets - Anand/ Rooo/ Hanu

Vendor is required to obtain approval from the Engineer –in Charge before making any procurement. Engineer –in charge may seek detail technical information/sample/ visit to the location of manufacturing before granting any such approval. The contractor shall arrange for technical information/sample/ visit at his cost.