???????? 1. Drainage board process [13615387820] [Hanjing]???????? Drainage Board Drainage Board grassroots acceptance → Planning → empty shop elastic line drainage board (only requires a fixed location , only a fixed area) → hang nail sidewall water drainage board?? → light buttoned together rubber hammer straps Drainage Board Drainage Board → → self-acceptance inspection and acceptance of the drainage board. ???????? 2. Drainage Board grass species requirements???????? (1) a solid, flat concrete surface???????? (2) a solid, flat cement mortar surface ???????? (3) Paving in solid and stable waterproof material surface???????? 3. operating points and the technical requirements???? (1) drain the natural start, stretch their legs laying on the planned location. ?????? (2) Drainage Board may be vertical or horizontal drainage slope laying unified direction. ?????? (3) lap must follow the direction along the drainage slope lap, does not allow reverse overlap. ???? (4) needs to locate the site or sites of temporary fixed shape changes, the use of asphalt mastic adhesive fixed point?????? (5) Termination of the drainage board construction site design requires a combination shut OK. ???????? 4. Backfill method???????? Backfill on the drainage system, earthmoving vehicles in order to prevent the destruction of a drainage system, backfill backfill needed inward from the periphery, process is as follows: [ 13615387820] [Hanjing]?????? (1) laying in the backfill when the first non-woven, non-woven side while laying backfill mound point pressure using solid, then backfill. ?????? (2) off the first layer of backfill backfill thickness greater than 600mm, the frog after tamping machine compacted backfill can walk on?????? (3) Subsequent backfill, thickness of each backfill is 600mm thick. ?????? (4) finally left 300 ~ 500mm thick preparation for the artificial cultivation of the soil, natural backfill without compaction. Second, the construction precautions?????? 1 in a dry, ventilated storage environment, drainage board, to prevent exposure, away from sources of ignition. ?????? 2 please stand up or lie flat drainage protection board, not tilted or cross horizontal pressure, stacking height of not more than three layers, to avoid heavy heap pressure?????? 3 when laying flat natural , Longitudinal or by the laying of water.?????? 4 single lap when laying geotextile 150cm, lap joints with glue or compacted sand secluded free movement, and then backfill, the first layer of backfill to ensure that compacted before the next step, layered backfill must be compacted. [13615387820] [Hanjing]