tender for repair and maintenance of 01 nos squad post in c coy trg area at stc bsf kharkan camp; 1 dismantling roofing including ridges, hips, valleys and gutters etc., and stacking the material within 50 metres lead of: asbestos cement sheet 2 providing and fixing precoated galvanised iron profile sheets (size, shape andpitch of corrugation as approved by engineer-in-charge) of total coated thickness 0.50 mm (base metal of minimum 0.45 mm 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 desiredby engineer-in-charge. the sheet shallbe 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. 3 painting with synthetic enamel paint of approved brand and manufacture to give an even shade : two or more coats on new work 4 removing dry or oil bound distemper, water proofing cement paint and the like by scrapping, sand papering and preparing the surface smooth including necessary repairs to scratches etc. complete. 5 less rate correction factor 0.973