Xi'an Decoration classroom cauldron ceiling construction technology, process and acceptance

There are many forms of construction process, process and acceptance ceiling construction for caisson well ceilings in Xi’an decoration classrooms. They are divided into paint ceilings, wallpaper ceilings, wooden ceilings, and veneer ceilings from the use materials. They are structurally divided into light steel keels, aluminum alloy keels, and Wooden keel ceiling, from the appearance of the shape is divided into flat ceiling, algae ceiling and special ceiling. In home decoration, wood keels are generally used as skeletons, and gypsum boards or wood are used as panels, paints, or wallpapers as decorative altar-type ceilings. This kind of ceiling can overcome the contradiction between the low and top of the room, improve the grade of decoration, reduce the construction cost, and achieve the purpose of top decoration. Therefore, it is widely used.
1, familiar with the drawings, according to plan construction. Use a horizontal tube to copy the horizontal line and use the ink line to eject the baseline. For a partially suspended ceiling room, if the original ceiling is not horizontal, the ceiling shall be made as a horizontal or smooth roof, and shall be determined by the client after soliciting opinions from the designer.
2. The height difference between algae-ceiling ceilings shall not be greater than 30mm. If the elevation difference is greater than 30mm, the tiers shall be used to reduce the height difference of each layer.
3, the arc top shape should be set on the ground first, after the correct top can be determined to ensure smooth lines.
4. The ceiling of the ceiling shall not be lower than 40×60 wood keel, and the spacing shall be 800-1000. It must be fixed and fixed with 100×8 steel, about 1m2. The expansion of the steel shall be as far as possible in the seam of the prefabricated plate. The steel expansion nut shall be pressed against the wooden keel.
5, suspended ceiling keel not less than 30 × 40 wooden keel, the choice of materials used, scrap material can not be used for ceiling grille, can only be used as hanging bars. The dragon skeleton should be used after pushing the bottom surface. The distance between the gypsum board gypsum board is 400×400 and the distance between the keel of the board is 300×300. The spacing between the keel of the ceiling board of the kitchen and bathroom is not more than 600×600. The light steel keel spacing is used to construct the material according to the requirements of the material.
6, playing wooden keel grill should pay attention to the location of the lamps, downlights shall not have wooden keel, chandelier and ceiling lamps should be reinforced separately, the living room lamp should be added steel expansion fixed. Light fixtures can be hung on the main keel. Luminaires or ceiling fans with a weight greater than 3 kg must not be attached to the keel of the ceiling. Additional hooks should be provided.
7. The gypsum board must be blocked before use. When the board is closed, the adjacent board is to be sewn 3mm, fixed with a special screw, sink into the gypsum board 0.5-1mm, nail pitch 150-170mm. The fixing should be fixed from the middle of the board to the four sides, and no more operations at the same time. There must be a keel at the intersection of the board seams.
8, before the seal plate must be elastic block, to ensure that the nail nailed to the wooden keel, fixed with a nail, nail distance 80-150mm, nail eye painted anti-rust paint. If latex paint is used, it must be coated with alkyd varnish to prevent it from turning.
9. When using aluminum gussets and lacquer gussets, it is necessary to understand the specifications of gussets, and to re-combine under the reasonable spot size. The ceiling of the bathroom must also use steel to inflate and apply fire-retardant paint. The kitchen ceiling should be as high as possible.
10. When closing the panel, pay attention to the lamp line pulled out of the top surface. Position the downlight on the cover panel according to the construction drawing and drag the thread head.
11, the total height of the dark band is generally 120-200mm, all dark band should use double neon tube, dark band front plate should use nine or two plates or wood plates, tailgate Use a five-layer board. The panel ceiling should be made of wood keel base, a layer of five layers, and cover plate.
12, the installation of the keel (solid wood floor or wooden platform), against the wall board (wood) full brush moisture-proof coating, because the civil construction was not completely dry after exposure, easy to absorb moisture or deformation.
Acceptance Criteria:
1 The alveolar ceiling elevation and specifications meet the design requirements;
2 The surface of each plane and elevation is flat, without arching, collapse, and unevenness;
3The keel and veneer are firmly installed, and there are no cracks at the intersection of the interfaces;
4 lamps layout is reasonable, horizontal and vertical symmetry, the switch is flexible and effective;
5 The decorative line is installed straight, the surface paint film is smooth, bright, no flow, air bubbles, wrinkles and other quality defects;
6 The ceiling keel shall be arched 1/200 in the short span;

Common quality problems and treatment methods for algae ceilings
1, wood keel installation of common quality problems and handling methods 1 keel loose: The main reason is that the fixed is not tight, the sub keel to connect the main keel and the boom, the joint should be nailed at least two nails, can be supplemented by wood glue adhesive, Increase connection strength.
2 The distortion of the underside of the keel is not smooth: The main reason is that the secondary keel is not installed properly, and the card slot keel and the sub keel slot are not in position, so rework, re-adjustment and installation are required.
3 keel arching sinking: The main reason is due to inaccurate dimensional measurements during construction and should be reworked. Keeling should be controlled within 1/200 of the room span.
2, veneer panel installation of common quality problems and processing methods 1 decorative surface bulging: mainly nail head is not caused by the inside of the board. Whether it is a nail or a wood screw, the nail cap must be placed inside the veneer. The nail can be nailed into the plate with a hammer horn pad or the wood screw can be sunk into the plate with a screwdriver and then leveled with a putty. Be careful not to damage the paper surface of the plasterboard.
2 Surface latex paint and wallpaper paste quality problems: Find solutions in latex paint and wallpaper construction specifications.

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