1, ensure the normal operation of various instruments used in the construction, check the work interruption, and the materials must be in place.

2. Where the building needs to be poured with fresh foamed concrete, it must be clean and tidy, without looseness and peeling. Check and clean the dirt on the surface in advance, and remove excess water in time, carefully check the preparation of each step and confirm it is qualified.

3. In order to ensure the integrity of the machine in the transmission process, it is necessary to ensure that there is enough water.