Name of Work:- REPLACEMENT OF ROOF SHEETS OF CENTRAL WORK SHOP IN PLANT AREA, NFL VIJAYPUR.
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Item Description
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Providing and fixing precoated galvanised corrugated iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-charge) 0.50 mm (+ 0.05 %) total coated thickness with zinccoating 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 8 metre or as desired by Engineerin- charge. The sheet shall be fixed using 'J' or 'L'hooks/self tapping stainless steel 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 andincluding cutting to size and shape wherever required. (Manufactured by: Tata steel , Jindal Steel works , Kamdhanu, appollo, asian )
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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, 5-7microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns using self drilling/ self tapping screws complete :
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a) Ridges.( 500-600 mm width)
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b) North light curves
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c) Gutters (600 mm overall girth)Providing and fixing of Pre-coated colour or mill finish Aluminium Roofing Gutters in 0.71 mm thickness ,Alloy 31500 (IS designation) [Aluminium Alloy (AA) 3004 (ISO designation)] For color, coating shall be 5-7 microns epoxy primer on both sides of the sheet and polyester top coat 15-18 microns, using self drilling/ tapping SS screws of size 6 x 50mm with 3mm thick EPDM seal and SS plain washer complete with all respect.
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Providing & fixing UV stabilised fiberglass reinforced plastic sheet roofing up to any pitch, including fixing with polymer coated 'J' or 'L' hooks, bolts & nuts 8mm dia. G.I plain/bitumen washers completebut excluding the cost of purlins, rafters, trusses etc. The sheets shall be manufactured out of 2400 TEX panel rovigs incorporating minimum 0.3% ultra-violet stabiliser in resin system underapproximately 2400 psi and hot cured. They shall be of uniform pigmentation and thickness without air pockets and shall conform to IS 10192 and IS 12866.The sheets shall be opaque or translucent,clear or pigmented, textured or smooth as specified
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2 mm thick Flat
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Dismantling roofing and vertical cladding sheets including North light curves, ridges, hips, valleys and gutters etc., and stacking the serviceable material and disposal of rubbish within NFL plant areasby mechanical means using tractor trolley or as per directions of Engineer-In-Charge within 1000 metres lead of :Asbestos Cement sheet
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Supply , fabrication and erection of Structural steel work in single section fixed with or without connecting plate including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.
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