tender for providing and fixing false ceiling at all height including of frame work made of special sections power pressd from m.s. sheets and galvanized with zinc coating of 120gms/sqm (both side inclusive) as per is 277 and consisting of angle cleats of of size 25mm wide x 1.6mm thick with flanges of 27mm and 37mm at 1200mm centre to centre. one flange fixed to the ceiling with dash fastener 12.5mm dia x 50mm long with 6mm dia bolts other flange of cleat fixed to the angle hangers of 25x10x0.50mm of required length with nuts & bolts of required size and other end of angle hanger fixed with intermediate gi channels 45x15x0.90mm running at the spacing of 1200mm centre to centre. , to which the ceiling section 0.5mm thick bottom wedge of 80mm with tapered flanges of 26mm each having lips of 10.5mm at 450mm centre to centre, shall be fixed in a direction perpendicular to g.i. intermediate channel with connecting clips made out of 2.64mm dia x 230mm long g.i. wire at every junction, including fixing perimeter channels 0.5mm thick 27mm high having flanges of 20mm and 30mm long the perimeter of ceiling gixed to wall/partition with the help of rawl plugs at 450mm centre with 25mm long dry wall screws @ 230mm interval, including fixing of gypsum board to ceiling section and perimeter channel with the help of dry wall screws of size 3.5 x 25mm at 230mm 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 150mm on both sides of joint and two coats of primer suitable for board, all as per manufacturers specirfication 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: , fully perforated gypsum plaster board