Draining pavement to support transit traffic and displace storm peak

The draining pavement, which can be placed in pedestrian areas, vehicle traffic areas and parking areas, acts as a network of canals able to collect and retain rain and storm waters in the urban subsoil and reduce their entry into the sewer network. As a whole, the system would have a similar effect than a storm tank.
Technology demonstrated in relevant environment.
Representative model or prototype system, which is well beyond that of TRL 5, is tested in a relevant environment. Represents a major step up in a technology’s demonstrated readiness. Examples include testing a prototype in a high-fidelity laboratory environment or in a simulated operational environment.
The technology has been tested in parking areas and worked successfully during 10 years. Next steps require to extend the testing activities to street areas with conventional traffic transit.

How does it work?

The drainage pavement consists of a set of "accumulation cells" which are underlain by a gravel subbase layer. The pavement collects the storm water allowing its movement through itself and its accumulation in the pavement-gravel subbase system. The total height of the pavement-gravel subbase system can be higher than 50 cm. which makes possible to store more than 10 cm of water per square meter.