CONSTRUCTION OF TERRACE ROOF SHEETING IN SDF- 1 (PHASE 2) AT MEPZ SEZ, TAMBARAM, CHENNAI - 600 045

Dismantling the existing flooring for pedestal concrete of size 600x330x250mm (Area upto 0.20 Sqm) Average tk -Process involved a) Cutting the existing concrete surface upto 50mm depth with groove cutting machine and making good the same. b) Dismantling the existing RCC concrete upto existing reinforcement of top layer from 75mm to 200mm depth and disposal of debris by dump lift from 3rd floor terrace upto 50m lead. c) Preparing the surface by applying Nitozinc primer (Fosroc make) on existing exposed reinforcement including cleaning the concrete surface with wire brush and removing dust particles with heavy duty blower machine etc. d)The proposed reinforement (as per the drawing) to be welded with the existing reinforcement with proper alignment etc.

Chipping of unsound/weak concrete material from slabs, beams, columns etc. with manual Chisel and/ or by standard power driven percussion type or of approved make including tapering of all edges, making square shoulders of cavities including cleaning the exposed concrete surface and reinforcement with wire brushes etc. and disposal of debris for all lead and lifts all complete as per direction of Engineer-In- Charge. 50mm average thickness

Demolishing mud phaska in terracing and disposal of material within 50 metres lead

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level 1:2:4 (1 cement: 2 coarse sand (zone-III) including manufactured sand derived from Recycled Concrete Aggregate (RCA) upto 25% : 4 graded stone aggregate 20 mm nominal size including Recycled Concrete Aggregate (RCA) upto 25%)

Demolishing R.C.C. work manually/ by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of Engineer - in- charge

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.

Centering and shuttering including strutting, propping etc. and removal of form work for: Columns, piers, abutments, pillars, posts and struts

Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana / Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge; for the following grades of concrete. All works above plinth level upto floor V level. Concrete of M40 grade with minimum cement content of 380 kg /cum

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.

12 mm cement plaster of mix: 1:4 (1 cement: 4 fine sand)

Steel work in built up tubular (round, square or rectangular hollow tubes etc.) trusses etc., including cutting, hoisting, fixing. in posifion and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete. Hot finished welded type tubes

Providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in- charge) 0.50 mm (+ 0.05 %) total coated thickness 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- l8microns. 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 Engineerin-charge. The sheet shall be fixed using self drilling /self tapping screws of size (5.5x 55 mm) with EPDM seal, complete upto any pitch in horizontal/ vertical or curved surfaces, excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required.

Providing and fixing precoated galvanised steel sheet roofing accessories 0.50 mm (+0.05 %) total coated thickness, 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 using self drilling/ self tapping screws complete : Gutter (1200 mm over all girth)

Providing and fixing of MS weld mesh safety shutter by using MS weld mesh of 1" x 1" (16 guage) welded with MS angles all-round with 25x6mm flat MS angle fixed with the support including one coat of zinc chromate primer and etc., complete

Painting with synthetic enamel paint of approved brand and manufacture to give an even shade : two or more coats

Providing and fixing on wall face unplasticised - Rigid PVC rain water pipes / SWR pipe conforming to IS : 13592 Type A including jointing with seal ring conforming to IS : 5382 leaving 10mm gap for thermal expansion (Finolex/Prince/Supreme). 160 mm diameter pipe

Providing and fixing on wall faced unplasticised - PVC moulded fitting / accessories for unplasticized - Rigid PVC rain water pipe.Bend 87.5 degree 160mm

Providing and fixing on wall faced unplasticised - PVC moulded fitting / accessories for unplasticised - Rigid PVC rain water pipe. Shoe (plain) 160mm

Supplying and fixing GI base clamp of all size (galvanised) for laying/ fixing pipe lines of various diameter on walls, the rate inclusive of necessary fixing acnchourfastner for fixing the clamp etc complete.

Providing and fixing double scaffolding system (cup lock type) on the exterior side, up to seven story height made with 40 mm dia M.S. tube 1.5 m centre to centre, horizontal & vertical tubes joining with cup & lock system with M.S. tubes, M.S. tube challies, M.S. clamps and M.S. staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it there after .The scaffolding system shall be stiffened with bracings, runners, connection with the building etc wherever required for inspection of work at required locations with essential safety features for the workmen etc. complete as per directions and approval of Engineer-in-charge .The elevational area of the scaffolding shall be measured for payment purpose.The payment will be made once irrespective of duration of scaffolding. Note: - This item to be used for maintenance work judicially, necessary deduction for scaffolding in the existing item to be done.