tender for replacement gs sheet shed of escape channel head& bml main br.gates & gearing system at anta complex in w/s mech. sub division jind. , works details , providing &fixing or corrugated g.s. sheet roofing including vertical/curved surface fixed with polymer coated j or l hooks, bolts. and nuts 8mm diameter with bitumen and g.i limpet washers tilled with white lead including a coat of approved steel primer and two coats of approved paint on overlapping of sheet complete (up to any pitch in horizontal/ vertical or curved surfaced ) as per hsr item no. 9.22.2 (0.80 mm thick with zinc coating not less than 275 gm/square m) , credit old scrap.