1. The main structure and wall frame, secondary components, steel platform, steel ladder and protective railings of single layer steel structure can be used only after quality acceptance

2. The inspection lot of steel structure installation shall be accepted on the basis of the acceptance of the site, the acceptance of welding connection, fastener connection, fabrication and other sub projects

3. The test and evaluation should be carried out before installation, including measurement correction, installation of high strength bolts, construction under negative temperature and welding process, etc. on this basis, corresponding construction technology or scheme shall be formulated

4. The installation deviation should be detected after the space stiffness unit is formed and fixed

5. During installation, the construction load of roof, floor and platform must be controlled. The construction load and ice snow load are strictly prohibited to exceed the bearing capacity of beams, trusses, floor panels, roof panels and platform auxiliary plates

6. After the spatial stiffness element is formed, the secondary pouring of fine aggregate concrete and grouting material should be carried out in time

7. For crane beam or beam directly bearing dynamic load, the tension flange, crane truss or truss directly bearing dynamic load shall not be welded with hanging objects and fixtures