repair of illuminated sign board on different entrance gate in residential area/ transit facility of armament estate pashan , pune , steel work in built up tubular ( round , square or rectangular hollow tubes hot finished welded type 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 . , 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 engineerin-charge . the sheet shall be fixed using self drilling /self tapping screws of size ( 5 . 5x 55 mm ) 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 . , 3 mm thick translucent white acrylic plastic sheet for illuminated information display on front side of board . , painting two or more coats with synthetic enamel paint of approved shade and manufacture over under coat of ordinary paint . , schedule of credit , old unserviceable building/grills/gates steel