1. Before installation, conduct line inspection on the axis and elevation of the grid support. The grid axis and elevation position must meet the design requirements and the provisions of relevant standards.
2. Before installation, check the strength of concrete at the top of the column. Only after the concrete strength at the top of the column meets the design requirements and relevant national standards can it be installed.
3. When the high-altitude sliding method is adopted, the sliding rail pulley should be checked, and the sliding cross slope should meet the construction design requirements.
4. When the strip installation and workbench sliding method are adopted, the ground workbench and sliding equipment should be checked and the sliding test should be carried out.
5. During overall hoisting or local hoisting, the hoisting equipment shall be inspected, and the hoisting speed, hoisting points, high-altitude closure and adjustment shall be tested, which must meet the requirements of construction organization design.
6. When the high-altitude bulk method is adopted, every scaffold shall be erected, and the position and elevation of each fulcrum shall be arranged by setting out. When the bolt ball bulk method is adopted, temporary fulcrums should be designed and arranged, and the position and quantity of temporary fulcrums should be determined through checking calculation.
7. Jack should be used as a temporary fulcrum for high-altitude bulk, so that the temporary fulcrum can gradually adjust the height of the grid. When the temporary support is removed after installation, it can descend synchronously between the fulcrums and be unloaded in sections.
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