How to control the installation quality of steel structures

The use of steel structures in Shandong is already very common. When we install steel structures, how should we control the quality?
Before installation, the construction unit should check the product certificates, design documents and pre-assembly records of the components, and re-inspect and record the dimensions of the components. When the deformation and defects of the steel structure exceed the allowable deviation, they should be dealt with.
Before installation, detailed measurement and correction processes should be compiled. For welding of thick steel plates, process tests simulating the product structure should be conducted before welding and installation, and corresponding construction processes should be compiled. A certain camber should be preset for the assembled roof trusses.
After the steel structure is hoisted in place, the design requirement control points such as component positioning axis and elevation should be measured and marked, and the quality of the hoisted butt joints should be inspected before welding. Install temporary supports and steel corrugated cables to make the steel roof trusses safe and stable during construction.
When installing steel structures, the construction unit should submit the elevation dimensions, welding, painting, etc. of each component after hoisting to the supervisor for acceptance.
Only when the installation quality of the steel structure is guaranteed can the entire project be guaranteed. Everyone must pay attention to safety during the construction process. Never be reckless, safety first!