Construction of Common Gypsum Board Ceiling and Its Construction Technology
Family practice is usually two kinds of wood keel self-tapping screws fixed gypsum board. Require wood keel after fire treatment, single solid keel section is not less than 25 * 25mm. The keel is not less than 25 * 40mm. Screw fixing requirements can not break the paper, the screw from the edge of the board, the original edge of not less than 8mm cutting edge of not less than 12mm. Screw spacing of not more than 200mm. There is no cross seam at the seams of the gypsum board. Seam gap is not less than 1/2 plate thickness. Usually with 9mm gypsum board.
Light steel keel requirements are basically the same. Just keel different. You ask the structure is not so clear that the need for illustrations, it is recommended that you find the standard Atlas.
There will be double gypsum board on the practice. At the same time for large span ceiling need to be arch.
A brief description of the production process is:
First with wooden keel frame structure, ceiling wood keel should be coated with fire retardant paint, hanging on the main keel.
Ladder-type ceiling with blockboard and wood composition. Wood keel do a good job after the paper gypsum board, paper gypsum board and keel connection must use self-tapping screws, screw head must enter the board 2mm or so, is strictly prohibited using gun nail, because the paper gypsum board strength is low, Small surface, easy to cause paper and gypsum board layer, and the paint construction caused great trouble.
Gypsum board splicing should be left about 5mm gap, to prevent the damp expansion caused by the top of the arch.
Paste gypsum board base treatment when applied anti-rust paint the screw point, otherwise the rust will penetrate the surface. And then the patchwork with elastic putty approved flattened with a white bandage, then full approval, the general approved scraping two to three times, dry after grinding smooth, and finally coated with paint.
For the installation of the ceiling of the ceiling due to the low strength of the plaster board, so gypsum board and keel should be added between a layer of plywood, so that the installation and maintenance of the lamp when you can prevent damage to the plaster board, Of the installation of fastness.
