|
"SB Drain is the material used for horizontal drain of pore water, and is the ground drain board consisting of the core structure of Polyvinyl Chloride and filter (Polyester non-woven spunbond) covering the core. The core structure itself and the filter are the flexible structure individually separated. The pore water surrounding the drain board goes into the drain board through the filter and smoothly passes through the water pass provided by the core structure, and then is discharged to culvert pipe or outside banking from end section of the drain board.
Even a heavy load applied on the drain board, its cross section of water pass comparatively does not decrease. Clogging problem inside the drain board due to soil particle shall not occur. Accordingly the pore water can be drained quickly.
Thus applying such characteristics, this can be used in place of other drainage (blind culvert, filter layer, sand mat, etc.) , using natural aggregate as quality sand, gravel stone and etc which can rarely can be obtained these days." http://www.tootoo.com/d-rp3113663-super-board-drain-sb-drain/
|
