Rainwater retention basin

In the town of Siegburg in the business district of Cologne, a rainwater retention basin is being built on the longest and most important street in the town to limit flooding during heavy rainfall. The basin has a capacity of around 3,000 cubic metres.

The circular construction pit shoring was constructed using bored piles. The actual rainwater basin is formed by another concrete wall. To ensure that this is not damaged in the event of possible subsidence, it was separated from the bored piles by a sliding layer of Pecafil^® permanent formwork material.

Thanks to their flexibility, the Pecafil^® sections adapt easily to any curvature. In addition, the layer makes it possible to save on concrete, as the recesses do not have to be poured.

Video of the construction site in Siegburg:

Fibre-reinforced concrete bar spacers were also supplied for the project. Bar spacers from MAX FRANK are efficient to use on site. A high load-bearing capacity and resistance to heat and cold ensure accurate maintenance of concrete cover.