Build drainage board build drainage board presentation of high-density polyethylene (HDPE) or polypropylene (PP) both to create a shape formed by heat and pressure with a certain three-dimensional space support stiffness of drainage channels, but also a kind of water Lightweight sheet. This kind of plate itself on having water, drainage of two integrated functions, plates with high stiffness characteristics of space, compression is superior to similar products (by field test test), can withstand high compressive loads 400Kpa above, Meanwhile planted roof can withstand the extreme load conditions backfill process of mechanical rolling. Create an inner layer of drainage, water discharge in the soil infiltration, storage reservoir of osmotic water and other functions, as opposed to the previous generation of the drain has the following disadvantages: Northern drought, build drainage board can be filled with water, it is conducive to the growth of vegetation; build drainage board bump sidewall thick, so the larger compressive strength, can reach 40T, far larger than the plastic tabs (high-density polyethylene drainage board, HIPS drainage board), plastic drainage mat and other similar Products (RCC can actually experiment), to meet the construction requirements backfill and uptime requirements; build drainage board support surface is relatively large, neither due to subsidence of the overlying non-woven fabric (below) blocked drainage channels, nor Non-woven tear due to insufficient tension leads to blocked drainage channels into the soil, build drainage board can retain the integrity of the drainage space, completely avoid the plastic tabs cause subsidence due to poor drainage nonwoven happens, will not be because poor drainage cause vegetation wither and die. Build drainage board Installation Process water on board the installation and construction according to the figure shown on the fine stone concrete cover has completed the laying of direct, plates overlap using engaging way. Build drainage board Installation conditions 1, the primary surface should be smooth; 2, protective layer of fine aggregate concrete construction is completed and after acceptance. Installation build drainage board build drainage board construction process according to the design requirements laid overlapping plates using engaging way. General Construction Technology 1, grass-roots acceptance → Planning Process elastic line → empty shop build drainage board → engaging lap button → Self acceptance inspection and acceptance → → → Self acceptance laid nonwoven polyester fabric → inspection and acceptance. 2, the operating points and technical requirements (1) to keep every piece of good drainage board fastening. (2) non-woven lap tight, avoid the soil into the drainage channel, blocking drainage. 3, backfill methods in order to prevent damage to the earth moving vehicle build drainage system and backfill backfill needs inward from the periphery, the following steps: (1) when the first backfill laid non-woven, non-woven laying is completed after acceptance followed by backfilling soil. (2) walk in backfill vehicle, pay attention to the thickness of backfill, backfill thickness ≥500mm only after walk on vehicles. Build drainage board features a convenient construction, maintenance is simple and economical. 2, the load resistance and durability. 3, to ensure that the excess water to drain away quickly. 4, storage section can store up some of the water. 5, give the plant growth to provide adequate moisture and oxygen. 6, lightweight and powerful roof insulation. Build drainage board uses for the green roof, green roof panel underground, city squares, golf courses, sports fields, sewage treatment plants, public buildings, green, Green Square, the park road greening works.