Details: 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 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 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 of total coated thickness 0.50mm (base met
Sector: Police and Internal Security