What are the causes of cracks after the installation of large steel structure building?

Many customers have experienced cracks in the installation of large steel structure building. What is the reason? Is there any way to deal with it?

The reasons why cracks are easy to occur after the installation of  steel structure buildings are as follows:

1. When selecting the steel structure, we did not pay attention to the quality.

2. The installation and construction of steel structure is not standardized.

① No standardized joint sealing materials were used.

② The installation steps were not followed.

③ Common joint sealant is used for frame installation.