133-7562-1123 【supply】 Guizhou underground garage ○ ○ drain water board?? Supply of Guizhou, Guiyang Drainage Board Drainage Board → → → Liupanshui Lawrence Drainage Board Drainage Board → Anshun → Qiannan Drainage Board Drainage Board Drainage Board → Southeast → Southwestern Bijie Drainage Board Drainage Board → → → Tongren, Xingyi Drainage Board Drainage Board Drainage Board → → Duyun Carey Qingzhen Drainage Board Drainage Board → → → Chishui Renhuai Drainage Board Drainage Board Drainage Board → storage → Fuquan construction of drain Laying method:】 【133-7562-1123 
 1. Waterproof layer and the protective layer after construction began pavement drains. Primary drainage slope to meet the requirements of 2 ‰ ~ 5 ‰; 2. Goblet drain port facing up to pavement, interlocking perforations; 3. Drain covered with geotextile fabric, geotextile overlap with each other 10 ~ 20cm, to prevent mud and water wear over geotextile fabric, clogging the drainage system storage, resulting in poor drainage, water storage reduced; 4. geotextile above the shop in the 10 ~ 20mm in the sand, the formation of filter layer permeability, could be planted to prevent soil erosion; 5. cover the planting of proper thickness soil. 6. To do the drainage board product protection. Pavement drainage board, the board should not be allowed to drain directly pushing of the trolley, transport materials to the laying of wood, Ma Road. To do with the shop with the filling. 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