The cushion concrete should be poured immediately after the groove is inspected to protect the foundation. When the cushion plain concrete reaches a certain strength, stretch the line, support form and lay steel bars on the upper side.
Pad concrete should be watered immediately after the inspection of the groove to protect the foundation, when the mat layer concrete reaches a certain strength, in the upper bullet line, support mold and spread rebar.
The cushion concrete should be poured immediately after the groove inspection to protect the foundation. When the plain concrete of the cushion reaches a certain strength, the line, formwork and reinforcement should be snapped on the top.<br>