CERTAIN REPAIRS TO ROOF SHEET WORK FALSE CEILING ETC AT NMS UNDER AGE (I) NABAGRAM

Dismantling wrought iron or mild steel work of anu description not otnerwise provided for

S&F MS work as in tubular trusses/post/purlins/rafters etc special shaped washer etc complete using ERW or induction butt welded tubes confirming to IS-1161-1979 gradest 240.

S&F MS plates (plain or chequered) channels, square cut or notched (ordinary and counter sunk) forming holes, without any attachment confirming ti Fe 290, Gde - 165.

S & F mild steel flat iron such as hold fasts, wind ties, wall tiles etc conforming to IS-2062 and grade E-165 (Fe-290), complete all as specified and as directed by Engineer-in-charge.

M&L for two coats synthetic enamel paint over a coat of aluminium red oxide primer on newly steel surfaces complete all as specified and as directed.

M&L for one coat synthetic enamel paint on old steel surfaces complete all as specified and as directed.

Dismantling of plain or corrugated roof sheeting of any description, gauge, thickness, including nut, bolts in roof coverings.

S&F pre- painted galvalume aluminum zinc coating GI based corrugated/semi corrugated steel sheet 0.50 mm thick of an colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws as specified

S&F Pre-painted galvalume aluminum zinc coating GI based Plain steel sheet 0.50 mm thick of any colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws as specified

S&F 0.56 mm plain aluminium sheeting , alloy 31000H4 in ridge hips, , valley gutters drip, and straight flushing (length and girth as fixed) on frame work of any description complete all as specified and as directed.