http://www.youtube.com/watch?v=J-yx4ItjErw
Pervious pavement / porous pavement consists of a permeable surface course underlain by a uniformly-graded stone bed. Stormwater drains through the surface, …
http://www.youtube.com/watch?v=J-yx4ItjErw
Pervious pavement / porous pavement consists of a permeable surface course underlain by a uniformly-graded stone bed. Stormwater drains through the surface, …