Details: 15.28 : dismantling roofing including ridges, hips valleys and gutters etc., and stacking the material within 50 metres lead of:15.28.1 : g.s. sheet 15.28 : dismantling roofing including ridges, hips valleys and gutters etc., and stacking the material within 50 metres lead of:15.28.2: asbestos sheet 12.50: providing and fixing precoatedgalvanized iron profile sheets (size, shape and pitch of corrugation as 5% total coated thickness (tc t), zinc coating 120gsm as per is:277 in approved by engineer-in-charge) 0.05 mm. 240 mpa mm 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 while 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 /self tapping screws of size (5.5x 55mm) with epdm seal or with polymer coated j or l hooks, bolts and nuts 8mm diameter wit
Sector: Mining