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Anonymous users2024-01-241. Cracking of all ceilings is one of the common quality problems in the process of home decoration, and no matter what kind of maintenance is done during decoration, the cracking of the ceiling cannot be completely avoided. Let me explain:
1.In cases where a wooden keel can be used, a light steel keel can also be used. This is because the expansion and contraction of wood is relatively large, which can easily lead to structural deformation.
2.Pay attention to expansion joints in design and construction. There should be an expansion joint at each joint, and it should be poured into a 45-degree angle to avoid stress accumulation.
3.The light steel keel or wooden keel is installed flat, and the spacing is standardized.
4.The self-tapping nails should be evenly distributed to ensure that the force of each self-tapping nail is close, otherwise it is easy to form a side-lock reaction that will cause the structure to lose stability and produce deformation cracks.
Guiyang florist.
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In addition to the defect that wood is easy to decay, another important defect is that it is easy to deform and crack. Due to the characteristics of wet expansion and dry contraction and anisotropy of wood, if the moisture content of wood occurs in the process of use, the wood will be deformed in all directions, but because the tangential shrinkage of wood is much greater than the radial shrinkage and the moisture content gradient between the inner and table, this deformation difference will produce stress when the wood is deformed, and when the stress exceeds the tensile strength of the wood, the wood cracking phenomenon will occur at the stress point, and the common ones are end cracks, surface cracks, internal cracks, wheel cracks, etc. The degree of deformation and cracking of different types of wood varies greatly, and generally the harder the wood, the more likely it is to occur. >>>More
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