tender for annual plan-2025-26 improvements to eruvaikkonam sub-centre-project no. 13/26-general civil work - maintenance work 2 50.10.1:steel work in built up g i tubular ( round, square or rectangular hollow tubes etc.) trusses etc., 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 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 4 12.50:providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by engineer-in-charge) 0.50 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 scratches during 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 (5.5x55mm) 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. 5 od262914/2025-2026:providing and fixing 150mm dia pvc water gutter semi cercular section including fitting with 32x5mm ms flat supports at 1m interval etc complete 6 50.18.9.18.1:providing and fixing pvc pipes including fixing the pipe with clamps/clips at 1.00 m spacing. this included jointing of pipes with one step pvc solvent cement and testing of joints complete as per direction of engineer-in-charge 75 mm dia 6kgf/cm2 - external work- exposed on wall