Details: building maintanance 22.14.1:grading roof for water proofing treatment with:cement concrete 1:2:4 ( 1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) 50.6.2.2:solid masonry using pre cast solid blocks (factory made) of size 30x20x15cm or nearest available size confirming to is 2185 part i of 1979 for super structure up to floor two level with thickness 15cm in : cm 1:6 ( 1 cement : 6 coarse sand) etc complete od207242/2024-2025: providing and fixing precoated galvanised iron profile sheets (size, shape and pitch ofcorrugation as approved by engineer-in-charge) 0.35 mm (+0.05%), total coatedthickness 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 shal
Sector: RDPR