Providing Water Proofing Treatment for the Gutter Portions and Un-Treated Portions of BMS Hangar and Other Civil Works at Main Factory Area at ARDC HAL DC

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Specification

Removing the old bitumen tarfelt sheet & grinding the surface throughly. The surface to be treated for waterproofing shall be free from dust, sharp a projection and moisture, etc., all complete as directed by Engineer-in-Charge.

Providing & laying waterproofing Treatment with APP (Atactic Polypropylene Polymer) modified Pre-formed 4mm thick mineral top, waterproofing membrane of approved make, with centre core of polyester reinforcement & polythylne film at the top and botttom surface including a coat of bitumen primer of approved make as per the manufacturer specifications, for bitumen membranes manufactured to IS: 3384-1986. over the dried prime coat, laying 4mm thick APP Membrane using butane torch while maintaining the side overlaps 100mm end overlaps 150mm, sealing all overlaps etc. and upto 300mm overlap with exisitng old APP membrane complete, including treatment at all junctions and Corners to accomodate Stresses with 300mm Wide Strip of same Waterproofing Membrane terminated by tucking it into the groove made on vertical plane the groove sealed with Cement- Sand Morta, etc., all complete.

Dismantling old plaster or skirting raking out joints and cleaning the surface for plaster including disposal of rubbish to the dumping ground within 50 metres lead, etc., all complete as directed by Engineer-in-Charge.

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering up to floor five level-1:2:4 (1 Cement : 2 coarse sand(zone-III) derived from natural sources : 4 graded stone aggregate 20mm nominal size derived from natural sources), etc., all complete as directed by Engineer-in-Charge.

Plastering to External brick wall, ceiling, roof slab, concrete surfaces etc with 15mm thick cement plaster on the rough side of single or half brick wall of cemnet mortor (1:6) including leveling,curing and making the level smooth and at all heights, etc., all complete as directed by Engineer-in-Charge.

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work using members like MS members made up of elements like ISMB, ISMC, ISA, MS Flats, ISNT, MS Plates, holding down bolts, nuts, washer, etc., including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, etc., all complete as directed by Engineer-in-Charge.

Providing and fixing Concealed Chlorinated Polyvinyl Chloride (CPVC) pipes of approved brand, having thermal stability for hot & cold water supply, including all CPVC plain & brass threaded fittings, fixing the pipe with clamps at 1.00m spacing, necessary reducers, unions, collars, bends, tank adaptors, MTA, FTA, etc., This includes jointing of pipes & fittings with one step CPVC solvent cement and the cost of cutting chases and making good the same including testing of joints and making good the walls, etc., all complete as directed by Engineer-in-Charge.

20mm dia

25mm dia

Providing and fixing PTMT extension nipple for water tank pipe, fittings of approved quality and colour 25mm nominal bore. Weighing not less than 62 gms, etc., all complete as directed by Engineer-in-Charge.

Providing and fixing gun metal gate valve of following dia as mentioned below, etc., all complete as directed by Engineer-in-Charge.

20mm nominal bore with C.I. wheel of approved quality (screwed end) .

25mm nominal bore with C.I. wheel of approved quality (screwed end).

Dismantling 100mm dia and above dia C.I. or asbestos or PVC rain water pipe with fittings and clamps including stacking the material within 50 metres lead, etc., all complete as directed by Engineer-in-Charge.

Providing and placing on terrace (at all floor levels) polyethylene water storage tank, IS : 12701 marked, with cover and suitable locking arrangement and making necessary holes for inlet, outlet and overflow pipes but without fittings and the base support for tank, etc., all complete as directed by Engineer-in-Charge.

Disposal of surplus earth / moorum / building rubbish / malba / similar unserviceable, dismantled or waste material of partitions, ceiling boards, tiles, frames, etc., by mechanical transport including loading, transporting, unloading in all lifts / loads upt 10 km distance from HAL, etc., all complete as directed by Engineer-in-Charge.

Painting with two coats of synthetic enamel paint for steel / wood / concrete / brick work surfaces of approved shade and manufacture with a coat of primer including preparation of surface by wire brushing / sand papering the loosen paint and wiping the surface clean with mineral solvents to remove grease and hand marks, etc., prepare the surface for smooth & even using sand paper, metal paste for steel surface before painting the first coat. Top coat of desired shade shall be applied after undercoat is thoroughly dried and rubbed with fine grade of abrasive paper to ensure smooth and even surface, free from brush marks, etc., all complete as directed by Engineer-in-Charge.

Dismantling glass panes, glazing, aluminium / Gypsum partitions, doors, windows, fixed glazing and false ceiling including disposal of unserviceable material and stacking of serviceable material with in 50 meters lead, etc., all complete as directed by Engineer-in-Charge.

Supplying, laying , testing and commissioning of 160mm dia PVC pipes of 6kg/Sq cm SWR grade and of approved make with rubber ring joints conforming to IS 5382, jointed together with solvent in walls, trenches, and floors including all necessary fittings and specials, bends, branches, sockets, pipe cutting and wastages, cutting and making good seaking the gaps with cement mortar and making it water tight, etc., all complete as directed by Engineer-in-Charge.

Refixing old glass panes with putty, nails, white cement and required rivets / fillets into the exisitng MS frame including repairing and making good the MS frame for refixing the removed glass at any heigth and of any size, etc., all complete as directed by Engineer-in-Charge.

Demolishing R.C.C. work by mechanical means and stockpiling at designated locations and disposal of dismantled materials up to a lead of 1 kilometre, stacking serviceable and unserviceable material separately including cutting reinforcement bars, etc., all complete as directed by Engineer-in-Charge.

Providing & Grouting of dowel tubes / Shear keys / Joints of precast members with M-60 grade cementitious grout (Non Shrink) of approved make by suitable means ( Free flowing /pump),curing, etc., all complete as per directions of Engineer-in-Charge. (The payment shall be made on the basis of actual weight of approved grout injected.) . Stirrer mixed cementitious grout (non shrink) of approved make in dowel tubes / Shear keys / Joints of precast members.

Steel reinforcement for R.C.C work including straightening, cutting,bending,placing in position and binding all complete above plinth level.Thermo-Mechanically Treated bars of grade Fe-500D or more, etc., all complete as directed by Engineer-in-Charge.

Expansion joint treatment :

Providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-Charge) of total coated thickness 0.50mm (base metal of minimum 0.45mm thickness with total coating thickness of 0.05mm) with zinc coating 120 grams per sqm as per IS: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns. Sheet should have protective guard film of 25 microns minimum to avoid scratches during transportation and should be supplied in single length upto 12 metre or as desired by Engineer-in-Charge. The sheet shall be fixed using self drilling / seIf tapping screws of size [5.50 x 55]mm with EPDM seal, complete upto any pitch in horizonta l/ vertical or curved surfaces, excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required. ( to be cut and bent as per site requirement)

Providing and fixing glazing in aluminium/MS/Wooden door, window, ventilator shutters and partitions etc. with EPDM rubber / neoprene gasket etc. complete as per the architectural drawings and the directions of Engineer-in-Charge. With float glass panes of With float glass panes of 4 mm thickness (weight not less than 12.50 kg/Sq m)