A modular underground storm water infiltration tank system measuring 500m3 has been installed under a large shopping complex parking area in City of Vernon, Mt Hawthorn, Perth.

Specifications given to Elmich required the tank system to be able to withstand the high weight bearing load vehicles.

The solution provided by Elmich included the VersiTanks 550 modules assembled and interlocked on site, positioned within the excavated area that was lined with a geotextile layer.

Tanks were then covered with 500mm of compacted aggregate and bitumen to engineering specifications so as to withstand the weight of high vehicle loads the parking area would sustain.

The system works from storm water flowing from the adjacent shopping complex, the parking area and surrounding streets through a leaf/silt trap and into the tank system. It then seeps into the sand substrate which surrounds the VersiTanks.