tender for annual plan-kbp 2025-26 maintenance works to scdo office-(pr 49/26)-general civil work - buiding maintenance 2 12.45.1:providing and fixing false ceiling at all height including providing and fixing of frame work made of special sections, power pressed from m.s. sheets and galvanized with zinc coating of 120 gms/ sqm (both side inclusive) as per is : 277 and consisting of angle cleats of size 25 mm wide x 1.6 mm thick with flanges of 27 mm and 37 mm, at 1200 mm centre to centre, one flange fixed to the ceiling with dash fastener 12.5 mm dia x 50 mm long with 6 mm dia bolts, other flange of cleat fixed to the angle hangers of 25x10x0.50 mm of required length with nuts & bolts of required size and other end of angle hanger fixed with intermediate g.i. channels 45x15x0.9 mm running at the spacing of 1200 mm centre to centre, to which the ceiling section 0.5 mm thick bottom wedge of 80mm with tapered flanges of 26 mm each having lips of 10.5 mm, at 450 mm centre to centre, shall be fixed in a direction perpendicular to g.i. intermediate channel with connecting clips made out of 2.64 mm dia x 230 mm long g.i. wire at every junction, including fixing perimeter channels 0.5 mm thick 27 mm high having flanges of 20 mm and 30 mm long, the perimeter of ceiling fixed to wall/partition with the help of rawl plugs at 450 mm centre, with 25 mm long dry wall screws @ 230 mm interval, including fixing of gypsum board to ceiling section and perimeter channel with the help of dry wall screws of size 3.5x25 mm at 230 mm c/c, including jointing and finishing to a flush finish of tapered and square edges of the board with recommended jointing compound, jointing tapes, finishing with jointing compound in 3 layers covering upto 150 mm on both sides of joint and two coats of primer suitable for board, all as per manufacturers specification and also including the cost of making openings for light fittings, grills, diffusers, cutouts made with frame of perimeter channels suitably fixed, all complete as per drawings, specification and direction of the engineer in charge but excluding the cost of painting with:12.5 mm thick tapered edge gypsum plain board conforming to is : 2095-part 1 :2011 (board with bis certification marks) 3 13.60.1:wall painting with acrylic emulsion paint of approved brand and manufacture to give an even shade:two or more coats on new work 4 13.80:providing and applying white cement based putty of average thickness 1 mm, of approved brand and manufacturer, over the plastered wall surface to prepare the surface even and smooth complete. 5 13.61.1:painting with synthetic enamel paint of approved brand and manufacture to give an even shade:two or more coats on new work