Translations:Regenwassernutzung/184/en
Concrete tank
Several concrete factories now produce monolithic concrete tanks (without junctions in water area) for rainwater harvesting in sizes of up to 20 m³. Due to the weight of tanks and the corresponding high transportation costs on special trucks with rear-mounted cranes, they are usually used within a range of a few 100 km around the production factory. Since the tanks can be directly installed in the excavation pit most suitably by the rear crane, it must be well accessible by the truck. Most concrete tanks are usually trafficable by passenger cars and with the appropriate cover even by trucks. With appropriate soil cover, the concrete tank can also be used with high groundwater. Cohesive soils are usually unproblematic. Larger volumes can be realized by coupling multiple tanks or with in-situ concrete construction. The quality of a concrete cistern is determined by the concrete quality (e.g. compressive strength class C45/55), the concrete reinforcement (steel reinforcement at least in the base and cover) and wall thickness (min. 8 cm).
