The following precautions should be observed in the construction of steel structures in rainy days:

    1. rainy days during the construction, erection of temporary protection should not shed rain falling in the hot weld. If the welding position is wet, must use dry cloth to clean and dry before welding with oxyacetylene flame, keep the seam dry, no residual moisture.

    2. when lifting, if there is water accumulation on the components, it should be cleaned before installation, but it must not be damaged. When installing the high-strength bolt joints, the friction surface of the components should be clean, and there should be no water droplets, and no rain or soil or oil dirt.