Translations:Regenwassernutzung/182/en

PE or HDPE plastic tank

Plastic tanks are produced by various manufacturing processes. The most common method is called rotational moulding through which PE (recyclable polyethylene) is melted in a hollow form, rotated and cooled. After demoulding, the hollow body (tank) is obtained. Since the machinery costs are not particularly high, several different shapes are available on the market. The stability and quality of the storage is determined by the suitable shape, wall thickness and ribbed-structure. Most of these tanks are offered in the walkable design (no traffic loads) and with volumes from 1000 to max. 10,000 litres suitable for single-family houses. In order to obtain greater storage volumes, several tanks can be coupled together. Their low weight makes transportation cheaper than concrete tanks and easy placement in the excavation pit without a crane. Most underground plastic tanks are not suitable for high groundwater levels or cohesive soils (clay). The uniform filling and compaction with a suitable filling material for plastic tanks is a prerequisite to achieve the necessary stability.