Wall is one of the supporting structures of buildings, and its verticality and levelness are very important to the stability and safety of buildings. According to the code for quality acceptance of building engineering, the verticality and levelness deviation of the wall should be controlled within the specified range, in which the verticality deviation should be less than or equal to 1/500 and the levelness deviation should be less than or equal to11000. Therefore, it is not normal for the wall to tilt 2 cm.
Excessive deviation between verticality and levelness of the wall will affect the service life and safety of the building, and may even lead to the collapse of the building.