Water system, for receiving and intermediate storage of rainwater, also reduction and extended time throttled delivery of water, includes at least one drainage pipe

摘要

The street has a paved surface and there is a gutter at its edge defined by two lines of curbstones (39) with a concave portion (34) made of filter material between them. The water running off the road drains through the filter layer and a layer of geotextile (20) into a second filter (36) layer which lies under the gutter and the edge of the road. There is a second geotextile layer (11) under the edge of the road. There may be a pipe embedded in the second filter layer to carry off the filtered rainwater.