Yusheng high-speed drainage board is made of polystyrene (HIPS) or is made of polyethylene plastic plate after punching cone penetration units (or hollow cylindrical porous) formed. Top surface plastic cone penetration units access layer of filter geotextile to prevent soil particles through, thus avoiding blocking drainage channels, drainage channels so smooth. The traditional use of brick tile drainage as a guide filter layer, the use of more pebbles or gravel as a filtration layer, the water discharged to the designated place. Now replace the pebbles treatment layer with a drain to drain the save time, effort and energy saving investment, but also reduce the load of the building. Construction Scheme 1, garage roof or do roof waterproofing on the basis of the construction, laying the scene to clean up the garbage, looking for 2-5 per thousand slope, the whole area can remain stagnant water. 2, along the roof drainage board laying down slope, drainage board two edges overlap each size fulcrum fulcrum 1-2, leaving both sides of the edge of the welding surface (can be welded or lap) general overlap 5-6 cm. Cover the top layer of drainage board geotextile, geotextile fabric and 8-10 cm edge overlap, the main purpose is to prevent soil drain flowing beneath, keeping drain open. 3, when laying drainage board as good protection, roofing or outside garage laying drainage board should backfill work in a timely manner, to prevent large wind in effect laying drainage board quality, full labor vehicle can not walk directly in the drain board, laying planks form a channel in order to prevent damage to the drainage board. 4, clayey backfill is recommended geotextile laying 3-5 cm above the grit in the casing, water treatment effect in favor of geotextile: If the backfill is a nutritive soil or light soil on without laying grit This earth itself is easy drainage. 5, garage on top of a counter-beam, when laying drainage board can wrap the entire beam, so that the drainage board as a whole shop of each volume in the past, the hole at the bottom of the handle of each girder. When the drainage board to shop floor drain hole should be aligned with the hole cut a hole, geotextiles maintain overall.