Wether it's in case of new construction or revitalisation, drainage systems for parking areas, e.g. shopping malls, supermarkets, appartment complexes or industrial sites, must fulfill serveral aspects: requirements for environmental protection, technically "state-of-the-art" and last but not least economically.

In many cases, surface water drainage not only includes the accumulating water runoffs from the parking areas, but also rain water roofs (e.g. malls, retail parcs).