tender for annual plan-2025-2026 naduvilkkara sub center truss work-vatanappally g p-general civil work-- 1 trusswork 2 50.10.2:steel work for purlin/single section with g i pipes including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete 3 od143681/2025-2026:providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by engineer-in-charge) 0.35 mm (+0.05%), total coated thickness 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 scratchesduring transportation and should be supplied in single length upto 12 metre or as desiredby engineer-in-charge. the sheet shall be fixed using self drilling/self tapping screws ofsize (5.5x55mm) with epdm seal, complete upto any pitch in horizontal/ vertical orcurved surfaces, excluding the cost of purlins, rafters and trusses and including cutting tosize and shape wherever required. 4 od137116/2025-2026:ridge caping with pre painted galvenised steel sheets 0.5mm thick 60cm wide including all cost and materials 5 od153112/2025-2026:providing and fixing upvc rain water collection gutters (150 mm4kgf/cm2)with all necessary fittings with clamps at 1 m intervel(12.41.2 modified) 6 4.1.5:providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - all work up to plinth level:1:3:6 (1 cement : 3 coarse sand (zone-iii) derived from natural sources : 6 graded stone aggregate 20 mm nominal size derived from natural sources)