Stormwater attenuation for commercial and municipal projects
If rainwater cannot or may not be infiltrated on site, heavy rainfall events must now be temporarily stored locally so that they can then be discharged in a throttled manner to prevent overloading of the drainage system and thus flooding. The systems are used in commercial properties under parking lots and access roads or in municipal projects. Our systems are characterized by particular cost efficiency and the highest product quality. They have been used for over 20 years in thousands of projects worldwide.
- Got loads of space? Then our flat, DIBt-certified DRAINMAX tunnels are ideal – including integrated pre-cleaning through sedimentation and filtration.
- Heavily contaminated areas? Here we recommend the trough-and-trench design. If there's no space for that, technical pre-filters are a good alternative.
- Easy to maintain & digitally monitored: All systems are particularly easy to maintain and can be conveniently monitored remotely with I-CONNECT.
- Limited space? Then we use our compact box systems – they allow depths of up to 9.5 m.
Buffer volume for heavy rain
If sufficient space is available, we recommend our flat, Dibt-certified DRAINMAX tunnels in a foil tray. The pre-assembled systems are easy to install. If space is limited, plastic or concrete tanks or box systems can be used, which can be installed at depths of up to 9.5 m.
Continuous discharge throttle
Every retention system requires a drainage system. For the flat DRAINMAX system, we offer an adjustable throttle valve that is integrated directly into the system. For retention systems with a higher structure, we offer continuous drainage throttle valves. If the throttle valve cannot be connected to the drainage system with a geodetic gradient, it can be pumped using a lift pump.
Stormwater attenuation systems
In our tunnel retention systems, the contaminated stormwater is first channeled into the sedimentation and filter area integrated into the system. This is where the contaminants are retained. Once I-CONNECT is installed, the system operator receives information about the sludge level and the throttling capacity of their retention system via their browser platform. Maintenance is easy via the integrated inspection and cleaning shaft. Our tunnel systems are installed in a basin sealed with a high-strength EPDM membrane. Our finished packages are delivered from the factory in one piece. This eliminates the need for gluing or welding on site. This guarantees absolute watertightness. The membrane is also protected by a special fleece on the bottom and a high-pressure washable fabric on the top. This allows for cleaning of the tunnel floor. The water is then buffered in the large-volume tunnels and drained through the integrated discharge throttle. This system is particularly cost-effective in terms of transport, procurement, installation, and operation. With just two different 80 cm high components, consisting of a DRAINMAX Calotte and a DRAINMAX Tunnel, flat systems of any size can be created without any connecting elements. The area above the Dibt®-certified system, which can withstand heavy loads of up to 60 t, is available for other uses, such as driveways or parking spaces.
In our honeycomb block retention systems, the contaminated rainwater is first cleaned through upstream sedimentation/filter shafts or our street runoff water filters. The water is then buffered in the foil jacket of the three-dimensional flow system. The 30 cm high version is used, for example, in cases of high groundwater levels or very low connection heights to the drainage system. The 60 cm high version can be stacked on top of each other up to an installation depth of 9.5 m. It is particularly suitable for retention systems that cannot be laid flat. The system is very easy to install without any connecting elements. The area above the TÜV-tested system is available for other uses, such as truck access or parking spaces.
Attenuation systems with our fiberglass-reinforced plastic storage tanks are ideal, for example, if installation is to be carried out very quickly. They are delivered to the construction site ready for connection up to approx. 200 m³. They are manufactured individually for your construction project and therefore require a lead time of approx. 6 weeks.
![[Translate to English:]](/fileadmin/_processed_/f/5/csm_1904_DM_Carl-Zeiss-Parkhaus_Geb%C3%A4ude_b5b8194ca9.png "Quelle/ Source: Tomáš, google.com/maps Mai 2019")
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