Public Works Department Tender

Supplying and fixing by drilling holes and not by puching for Roofing with pre painted Galvalum sheet of 0.47mm thick of best approved quality with required size with curved shape and white ridge sheet with necessary bolts and nuts bitumen washers, including cutting the sheet to the required size found necessary during execution etc., Complete complying with standard specifications. [The sheet should be got approved by the Engineer incharge before use on works]

Paving the floor with best approved quality Granite slabs (Super fine polished with machine cut edges) of sizes 4' x 2' and above 18mm to 20mm thick jet black with machine cut edges laid over a cement mortar bed of 20mm thick using cement mortar 1:3 (One cement and three M-sand) fixing the slabs with required cement slurry and laid in true right angles with minium possible width of joints and pointing the joints with white cement mixed with matching colouring pigments etc., The granite stone slabs and other materials to be used shall be got approved by the Executive Engineer Concerned before use on work, etc., Complete as per standard specification.

Supplying fixing and errecting of steel roof trusses and roof truss purlins fixing for G.I. sheet roofing using MS. L. angle of size 50x50x6 mm raffter, Tie angles and MS angle of size 50x50x6mm for sturts and MS plat of size 12 mm thick for fixing G.I. sheet. The purlins using MS L. angle of size 50x50x6 mm shall be properly anchored to the supporting super structure and fixed in concrete at wall and spacing of purlins are to be arranged to use the standard size or sheet and spacing should not execeed 1680 mm and free over hang at eves should not be more than 400 mm, the cleats shall be wellded to the trusses firmly and fixed on the down stream side of purlins. The ridge purlins fixed at 77 to 115 mm away the apex of the roof. The trusses shall have welded joints only at all guessets plate junctions except gussets at bottom chords to have bolts and nuts to permit transportation of trusses as directed. The foundation anchor bolts of trusses will be fixed in concrete at wall in bed blocks and well cured, labour for erection of trusses of approved quality transportation, priming coat for all members, cutting, bending, and welding etc., The trusses should be connected at bottom 1 / 3 part by steel tie angles and with top and bottom wind bracings as per design given. The chord of the trusses of bottom channel should suitablely cambered. The truss and purlins should be given priming coat of Rex Oxide primer of approved quality including labour for erection, transportation, wellding etc., complete complying with standard specification.