1. Preliminary pre-acceptance of the support must be conducted before preloading, mainly checking whether the spacing of the vertical rods is arranged according to calculation, whether the bottom support of the support is vacated, whether the scissors support is set to meet the requirements, etc., and timely rectification of defects.
2. In the process of preloading, hoisting operation must be directed by special person, and nighttime hoisting operation is prohibited.
3. Safety guard railings shall be set at the edge of the preloading area with a height not less than 1.2m.
4. The installation of pool formwork must have sufficient strength, stiffness and stability to meet the carrying capacity of water.
5. The loading must be carried out in a hierarchical manner in strict accordance with the requirements. During the loading process, special personnel must be sent to check the stability of the bracket and the template.