1) Analyze the cutting materials and draw the laying sequence and cutting diagram of the bentonite waterproof blanket.

2) Check the appearance quality of the bentonite waterproof blanket, record any mechanical damage and manufacturing trauma, holes and other defects that have been seen, for the convenience of repair during laying.

3) The construction of waterproof blankets should be carried out in weather without rain or snow. During construction, when it rains or snows, plastic film should be used to cover it up to avoid early hydration of GCL.