annual plan-manjalloor gp 2025-26. project no.71/26-piralimattam subcentre roofing-general civil work--1 piralimattam subcentre roofing-general civil work 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 10.16.1:steel work in built up tubular (round, square or rectangular hollow tubes etc.) trusses etc., including cutting, hoisting, fixing position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete.hot finished welded type tubes 4 od92141/2025-2026:providing and fixing 200 mm wide square u pvc rain water gutter including all necessary fittings and making all necessary connections complete as per the direction of engineer in charge at site 5 od92142/2025-2026:providing and fixing precoated galvanised steel sheet roofing accessories 0.40mm(+0.05%) tottal coated thickness ,zine coating 120 grams per sqm as per is:mm(+0.05%) tottal coated thickness,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 using self drilling /self tapping screws complete : ridges plain (500-600mm) 6 od92143/2025-2026:providing and fixingprecoated galvanised iron profile sheets(size ,shape and pitch of corrugation as approved by engineer-in-charge)0.35mm (+0.05%),tottal coated thickness with zinc coatind 120grams per sqm as per is:277,in 240 mpa steel grade ,5-7microns 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 up to 12 metre or as desired