Good drainage board laying construction: 1, construction of drainage holes must maintain verticality drainage holes, it's verticality control in ≤1.5% - 2%; 2, flat position Drain to indirect construction in accordance with design requirements, normal deviation does not exceed 5 cm. 3, drainage board is a bump made of polystyrene (HIPS) or polyethylene (HDPE) plastic plate after punching cone penetration units into or stiffener (or hollow cylindrical porous) formed. Build drainage board Shi insert requirements: 1, maintaining the continuity buried drainage board found fault that is re-applied interpolation. 2, the vertical length of the connecting drain overlap is not less than 10CM, and should be firmly connected. 3, applied in order to reach the drain plug after extubation design embedded depth. 4, complete drainage board administered plug and cut off, exposing the ground, "board head" length must not be less than 15CM. Laying drainage board Note: 1, before the construction: before the formal laying of the plate, the preferred construction workers need to do is to waste, cement and other debris removed within the construction area clean. 2, the construction being: during the laying process, we must make the relevant protective measures, one of which is the focus of protection and other impurities mixed with cement. If inadequate protection, the construction of these impurity region sheet, it will lead to the latter part of the plate using the congestion, which is not conducive to performance of the play. 3, after the construction: after completing laying work focus, the next step is finishing work around, which is the backfilling. Backfill soil must be used with a certain sticky soil, the best practice is backfilled after completion and then covered with a thin layer of sand. Good drainage board action: 1, drain water is discharged to the designated locations on the surface of a layer of filter drainage board homespun, in order to prevent soil particles through. Drainage Board, effort and energy, is indispensable in building materials products. 2, although the drains of the building has a significant role, but in the drainage system, when used properly drain board is very important because the drainage board specifications, quality is not the same material, which at the time of the construction of the technical staff high demands. 3, drainage board not only draining effect, it has the protective effect of buildings, acid substances in the soil in some places more, because the acid is corrosive substances on the building, with a drainage board can be a good The protection of buildings, but also reduce the role of noise drains moisture ventilation. Build drainage board acceptance: 1, plastic heat welding: the edge of the long side of the plane, according to a given size plastic welding. Inspection method: plastic heat welding edge flush weld width should be 100 ~ 150mm. 2, protective plastic roof drainage board, should lay the slopes along both sides and overlap. 3, planting protective plastic roof drainage board computing load, the roof must be less than allowed loads. 4, the laying of protective plastic drainage board should be smooth, curved and flat edge wingless no local projections.