2. During the construction of fiber cement pressure plate, the arrangement and welding of profiles must meet the design requirements of drawings, and the weld strength and welding quality must meet the standard requirements of GB/T5 185- 1985. The weld on the contact surface of fiber cement board should be smoothed before paving, so as to remove spatter during welding.
3. The thickness of fiber cement slab varies according to the span of the building, the size of load and the spacing of supporting beams. However, according to the national building materials specification, the fiber cement board selected must be a high-density fiber cement board with a density greater than 1.8g/cm3 and a flexural strength (air drying) greater than 28Mpa.
4. The longitudinal resistance and transverse resistance of high-density fiber cement board are slightly different, so the longitudinal direction of the board should be placed parallel to the main beam, and the edges of the joints between the boards should fall on the same beam, and the joints between the boards should be filled and sealed with silicone adhesive.
5, any edge of the fiber cement board shall not be suspended.
6. The length of the self-tapping nail should be 30-35mm thick, the nail spacing should be 300-600mm, and the center of the nail hole around the plate is about 20mm away from the edge of the plate.
7. Considering the waterproof layer in kitchen and bathroom, the area is small and the static and dynamic load requirements are slightly smaller. Therefore, the thickness of the plate can be slightly thinner, and the model of the selected profile can be judged accordingly.
Extended data:
Advantages of steel structure
1. Compared with traditional buildings, steel structure residential buildings can better meet the requirements of flexible partition of large rooms, and can improve the area utilization rate by reducing the cross-sectional area of columns and using lightweight wallboard, and the indoor effective area can be increased by about 6%.
2. Good energy-saving effect. The wall is made of light and energy-saving standardized C-section steel, square steel and sandwich panel, which has good thermal insulation and seismic performance. Save energy by 50%,
3. The application of steel structure system in residential buildings can give full play to the good ductility and strong plastic deformation ability of steel structure, and has excellent seismic and wind resistance, which greatly improves the safety and reliability of residential buildings. Especially in the case of earthquake and typhoon disasters, steel structures can avoid the collapse of buildings.
4. The total weight of the building is light, and the steel structure residential system is light, which is about half of the concrete structure, which can greatly reduce the foundation cost.
5. The construction speed is fast, and the construction period is shortened by at least one third compared with the traditional housing system. It takes only 20 days and 5 workers to complete a building with a square meter of/kloc-0.000.
6. Good environmental protection effect. In the construction of steel structure residence, the amount of sand, stone and ash is greatly reduced. The materials used are mainly green, and 100% recycled or degraded materials. When the building is demolished, most materials can be reused or degraded without causing garbage.
7. Be flexible and have money. Large bay design, indoor space can be divided into a variety of programs to meet the different needs of users.
8. Meet the requirements of residential industrialization and sustainable development. The steel structure is suitable for mass production in factories and has a high degree of industrialization. It can integrate advanced finished products such as energy saving, waterproof, heat insulation, doors and windows, and apply them in complete sets, integrating design, production and construction, and improving the level of the construction industry.
9. Compared with ordinary reinforced concrete structure, steel structure has the advantages of good homogeneity, high strength, fast construction speed, good seismic performance and high recovery rate. The strength and elastic modulus of steel are many times higher than that of masonry and concrete, so the weight of steel members is light under the same load. From the aspect of being destroyed, the steel structure has a warning of large deformation in advance, which belongs to ductile failure structure and can detect the danger in advance and avoid it.
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