Working principle of drainage board
Basically, there will be geomantic fabrics on the drainage board. The drainage plates are used with geomolgons. Because geomorphology can be permeated, and it can also block mud, sand grains and other substances. It plays a role of a filter layer.
The drainage board itself is a bumpy gear drainage board. A layer of geomantic fabric is laid here to form a water filter, and there is a large gap in the middle. This is where the water comes out, because the hole is upward, and the raised side is downward, so it can store a little water. This will not cause water loss in the soil. A passage formed in the middle of the downward convex can form a drainage tank, and the water flows out along this drainage tank.
Application of drainage board
Many large projects that require green geographical drainage plates, the bottom plate and top plate of the underground garage of the real estate in the new community, the roof of the building, the golf course and the geomantic drainage board sports field, will use drainage boards for drainage.
Because large sports fields are on the first floor, grassland. Then lay a layer of drainage board below, the overall drainage system is better.