Gypsum Board Ceiling
Advantage of Gypsum Board
Ease of installation : Gypsum board building system are easy to install for several reasons. Gypsum board panels are relatively large compared to other materials. They come in 48- and 54- inch wide sheets and in lengths of 9, 10, 12 feet, so they quickly cover large wall and ceiling areas. Gypsum board assemblies require only a few tools for their construction. Gypsum board can be cut with eitherr a utility knife or a variety of saws, and it can be attached with a variety of fasteners, including screws, nails and staples.
Fire resistance :
Gypsum board is an excellent fire-resistive building material. It is the most commonly used interior finish where fire resistance classifications are required. Its noncombustible core contains nearly 21% chemically combined water, as described earlier, which, under high heart, is slowly released as steam. Because steam will not exceed 212 digress F under normal atmospheric pressure, it very effectively retards the transfer of heat and the spread of fire. Even after complete calcination, when all the water has been released from its core, gypsum board continues to save as a heat-insulation barrier.
Sound isolation :
Preventing the transfer of unwanted sound to adjoining areas is a key consideration when designing a building, specifically when taking into account the intended activities of the occupants in the various parts of the building.
Gypsum board is used to construct strong, high quality walls and ceilings that offer excellent dimensional stability and durability. surfaces created using gypsum board are easily decorated and refinished.
Gypsum board is readily available and easy to apply. It is an inexpensive wall surfacing material that provides a fire resistance interior finish. Gypsum board building systems can generally be installed at significantly lower labor costs that most alternative systems.
Gypsum board satisfies a wide range of architectural requirements for design. Ease of application, performance, ease of repair, availability, and its adaptability to all forms of decoration combine to make gypsum board unmatched by any other surfacing product.
Providing and fixing at all height falls ceiling including providing and fixing of frame work made of special sections power pressed from MS sheet and galvanized in accordance with zinc coating as per IS:277 and consisting of angle cleats of size 25mm wide x 1.6 mm thick with flanges of 22mm and 37 mm at 1200mm centre to centre one flange fixed to the ceiling with dash fastener 12.5mm dia x 40mm long with 6mm dia bolts to the angle hangers of 25x25x.55mm of required length, and other angle of hanger being fixed with star screw to G.I. channels 45x15x0.9mm running at the rate of 1200mm centre to centre to which the ceiling section 0.5mm thick bottom wedge of 80mm with tapered flanges of 26mm each having clips of 10.5mm at 450mm centre to centre shall be fixed in a direction perpendicular to G.I. channel with connecting clips made out of 2.64mm diax230mm long G.I. wire at every junction including fixing the gypsum board with ceiling section and perimeter channels 0.5mm thick 27mm high having flanges of 20mm and 30mm long, the perimeter of ceiling fixed the wall/ partition with the help of rawl plugs at 450mm centre to centre with 25mm long drive-all screw @ 230mm interval including jointing and fixing to a flush finish of tapered and square edges of the board with recommended filler, jointing tapes, finisher and two coats of primer suitable for board as per manufactures 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 drawing and specification.
Gypsum Board Partition)
Providing and fixing Partition having composite thickness 75mm consisting of frame and double skin 12.5mm thick Gypsum Board,which including, providing and fixing of frame work made of special section power pressed from MS sheet and galvanized with zinc coating of grade 175 and consisting of floor and ceiling channel 50mm wide having equal flanges of 32mm width 0.5mm thick fixed to floor and ceiling at the spacing of 610mm centre to centre with dash fastener of approved make of 12.5mm dia 40mm length and the studs 48mm wide having one flange of 34mm and other flange of 36mm and 0.5mm thick and fixed vertically within the flanges of floor and ceiling channel and placed at a spacing of 610mm c/c by star screw at both ends of partition fixed flushed to wall with star screw at the spacing of 450mm c/c with horizontal runners 48mm wide having one flange of 34mm and other flange of 36mm and 0.5mm thick @1220 c/c fixed to vertical studs using 25mm dry wall screws and fixing to Gypsum Board either side of the frame work by 25mm long dry wall screws on studs, floor and ceiling at the spacing of 300mm c/c including two coats of primer, suitable for boards as per as per Gypsum Board specification