The performance specifications of the convex drainage board must meet the design requirements. Upon arrival, the drainage board should be properly protected from sunlight, damage, or contamination. This project shall not utilize damaged or contaminated convex shell drainage boards. During the turntable and installation process, the water filtration membrane of the convex drainage board should be safeguarded from damage. Prevent silt from entering the core and blocking the water supply holes, which may affect its drainage efficiency. The connection between the convex shell drainage board and the pile tip should be secure to prevent the drainage board from falling off when lifting the pipe. The flat top of the pile tip should fit the pipe appropriately to avoid misalignment, preventing silt from entering the pipe during laying, which can increase resistance against the plastic board and cause the plastic strip to be pulled out. Strictly control the spacing and depth. If the plastic strip is pulled up over 50 centimeters, repairs should be made. When extending the plastic board, to reduce resistance between the board and the conduit, the connection method of the water filter membrane's flat overlap should be used, with the overlap length being greater than 200mm. The length of the plastic board embedded into the sand cushion should not be less than 500mm.