Retention basins (RHB) can be designed for rainwater retention (RRB) or flood retention (HRB) and serve as retention areas. The normally empty basin is bordered by a dam. This can be designed with topotubes. The tubes allow the dam to take on the further function of a drainage structure in addition to water retention. In the case of rainwater retention basins, an additional cleaning effect. can be provided by the fill material.
Dam body: Compared to conventional construction methods, the earth-filled tubes can be used to build sustainable and resource-saving dams with extended functionality and at least the same safety and durability requirements.
Outlet structure: Since soil-filled geotextile tubes are flow-through structures (depending on the permeability of the fill) is a so-called flow-through construction, it is possible to design the dam in sections as a self-acting outlet structure.
Cost savings: The lower land consumption of the dam body, the use of local excavated soil, e.g. from the basin, generally reduce the overall costs. Furthermore, the design of the dam body as a sectional outlet significantly reduces costs, since a supplementary technical outlet structure can be dispensed with.
Inlet structure for HRB: If the structure is constructed in the tributary to the watercourse, an overflow sill can be provided in the dam body. Due to the overflow capability of the dike core made of topotubes, this can be provided risk-free with a calculable maintenance effort after floods.
Free initial consultation
We would be happy to discuss your possible application and share our experiences. In a conversation we can develop ideas for a further approach.