Border protection is very important. When the longitudinal slope is large, it is necessary to take safety measures, which are clearly stipulated in the special safety plan.

Before hoisting precast beam and slab, check the quality of components, use Mo Dou to play the installation axis on the capping beam and precast slab, and indicate the center of gravity position of precast beam and slab, and pad rubber bearing on the capping beam in advance to check whether the bearing position is accurate.