What are the standard requirements for the flatness and verticality of the wall? 1. According to the national requirements, the angle deviation is less than 3mm, and the yin-yang angle of the rectangular square should be detected first. Secondly, check the flatness and levelness of the wall with a 2-meter scale indicator, and the national standard requires that the deviation should not exceed 3 mm.
2, ceiling wall inspection, due to the review of smallpox, if there are cracks, smallpox should be paid attention to in the case of cracks, and the scratches of 5cm along all joints at the bottom should be removed during the later transformation.
3, empty drum phenomenon test, hear the sound, with a telescopic drum hammer on the wall, check the empty drum. The existence of empty drum will cause the whole surface to fall off.
The deviation of wall flatness and verticality specification allows the deviation of wall flatness to be 5mm, and the variation of water and mixed wall flatness to be 8 mm. In our house decoration, the general wall flatness can be regarded as basically qualified, and the wall flatness is a good tool. Now it is used by workers, which mainly affects the polishing of putty and two sub-processes. These electric sanders equipped with vacuum cleaners can effectively improve the roughness of walls.
1 Precautions for wall acceptance, shape and feeling of the wall
When checking the wall, we must pay attention to check the quality problems such as color difference, crack, peeling and rust. If it exists, it should be corrected.
2. Verticality and flatness of wall surface
In the process of acceptance, the verticality and flatness of the wall must be considered, and then the verticality can be detected by negative line and Yang Can. According to the relevant requirements of our country, the deviation of yin-yang angle should not exceed 3 mm.
3. ceiling survey
Be careful of cracks when checking the ceiling wall. If this happens, we will correct it later. 5 cm along the slit should be grounded, so that all clean and reusable cloth can be used to eliminate the reinforcement.
4, empty drum phenomenon inspection
When checking whether there is an empty drum on the wall, you can tap the wall with a telescopic hammer to see if there is an empty drum.
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