Water management calculator tool

This calculator shows the properties of Leca® lightweight aggregate in storm water management and flood prevention. Through this calculator you can test differing combinations of depths and areas of Leca® and the results which can be achieved. This innovative calculator can quickly indicate the level of performance. This is an essential tool for those working on designing and constructing green roofs, permeable surfaces, rain beds or ditches and looking for a solution to safely manage storm water.