Construction procedures and construction matters of plastic drainage board

Construction procedure

Drainage board manufacturer: The construction of plastic drainage board should be carried out in the following sequence after laying the sand mat

8、Move the hit design to the next board position.

Drainage board manufacturer: construction precautions

1、When positioning the setting machine, the deviation between the pipe shoe and the plate position mark should be controlled within ±70mm Within.
2、During the installation process, attention should be paid to controlling the verticality of the casing at any time, and the deviation should not be greater than 1.5%.
3、The setting elevation of the plastic drainage board must be strictly controlled in accordance with the design requirements, and there must be no shallow deviation; When it is found that the change of geological conditions cannot be set according to the design requirements, the on-site supervision personnel should be contacted in time, and the setting elevation can only be changed after consent.
4、When setting the plastic drainage board, it is strictly forbidden to kink, break and tear the filter membrane.
5、During installation, the return length shall not exceed 500mm, and the number of return tapes shall not exceed 5% of the total number of installed tapes
6、When cutting the plastic drainage board, the exposed length above the sand cushion should be greater than 200mm.
7、The construction status of each board must be checked, and the machine can only be moved to set the next one after meeting the inspection criteria. Otherwise, it must be supplemented at the adjacent board position.
8、During the construction process, self-inspection should be carried out board by board, and the original record sheet recording the construction of plastic drainage board should be made as required.
9、The plastic drainage board entering the foundation should be a whole board. If the length is insufficient and needs to be extended, it should be carried out according to the prescribed methods and requirements.
10、After the plastic drainage board passes the acceptance, the holes formed around the board should be carefully filled with sand cushion sand in time, and the plastic drainage board should be buried in the sand cushion.