1. If there is a gutter, it is even more important to pay attention to the tie rod. It must not reach the part near the top of the column, otherwise it may cause the installation of the downpipe to fail.
2. During the construction of steel structures in the United States, it is necessary to consider the distance between gutter downspouts, tie rods, and columns, otherwise installation accidents may occur.
3. The pulling holes of purlins should be carefully considered. If installed in reverse, the result may be unfavorable.
4. The arrangement of the tension bars between adjacent purlins on the upper and lower sides of the window frame is not good, and the ends of the tension bars conflict with the window frame.
5. If there is maintenance of brick walls in American steel structure engineering, it is necessary to coordinate with the civil construction unit in advance.
