Stormwater chamber having multi-layer mat

Details Stormwater chamber having multi-layer mat Stormwater chamber having multi-layer mat

E - Fixed Constructions

03

F

E03F 1/00 (2006.01) E03F 5/14 (2006.01)

Patent

CA 2732492

An apparatus is disclosed for receiving and dispersing stormwater underground, wherein the apparatus accumulates debris carried by the stormwater received. The apparatus includes an arch-shaped cross-section chamber buried in stone aggregate, the chamber having base flanges supported on a stone aggregate floor, the chamber having an interior space bounded by the floor; and a mat connected to the chamber and positioned over the floor. The mat includes one or more filtering layers disposed in proximity to the stone aggregate floor for filtering and retention of a portion of debris carried by the stormwater; and a protective layer disposed above the one or more filtering layers, for both filtering debris and for protecting the one or more filtering layers during a cleaning process. The first layer having an average pore size which is larger than the average pore size of the second; the first layer allowing a portion of debris carried in the water to flow with the water to the second layer. A method for receiving and dispersing stormwater beneath the surface of earth is also disclosed.

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