Infiltration for commercial and municipal projects
If the soil is capable of infiltration, the use of our infiltration systems has become indispensable in new construction and renovation projects. The systems are used in commercial properties under parking lots and access roads or in municipal projects. Our systems are characterized by special cost efficiency and highest product quality. They have been used in thousands of projects worldwide for over 20 years.
- 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.
Note: The film shows a load test of the previous tunnel with separate sedimentation, filter and inspection chamber; these functions are already integrated in the new DRAINMAX Tunnel PP. Only use black, high-pressure flushable geotextile under the trench – fleece materials clog up over time and reduce infiltration. Please observe the user guidelines for precise installation.
System variations
In our tunnel infiltration systems, contaminated rainwater is first directed into the sedimentation, filtration, and separation area integrated into the system. Here, the dirt is retained. The water is then buffered in the large-volume tunnels and seeps into the ground from there. They are constructed using DRAINMAX tunnels approved by the German Institute for Building Technology (DIBt) for 60-ton trucks. Installation is quick and easy. The tunnels are installed in a basin on a high-pressure flushable fabric. Compared to other systems, the tunnel system is therefore the only system in which the trench floor can also be cleaned to ensure permanent infiltration capacity. The storage volume is determined by the storage space of the large-volume tunnels and the pore volume of the filling material. This system is particularly cost-efficient in terms of transport, purchase, installation, and operation. The tunnels can be stacked, resulting in very low transport and storage costs and short delivery times. Once I-CONNECT is installed, the system operator can use their browser platform to obtain information about the sludge level and infiltration performance of their system and is immediately notified of any changes via the integrated warning system. With only two different 80 cm high components, consisting of DRAINMAX dome and DRAINMAX tunnel, large-area systems of any size can be created without any connecting elements. The area above the system is available for further use, such as access roads or parking spaces.
In infiltration trenches, the polluted stormwater (e.g. from roadways) is cleaned via the revitalized soil layer of the trench. This variant can offer advantages, especially for large, municipal systems. Disadvantages are that the surface of the trough cannot be used further, that maintenance work, e.g. green maintenance, is required for the trough and that safety precautions must be taken to prevent access in the event of water accumulation due to heavy rainfall.
In our honeycomb block infiltration trenches, the polluted stormwater is first cleaned by upstream sedimentation/filter shafts or our street runoff water filters. The water is then buffered in the three-dimensional flow-through system, from where it infiltrates into the ground. The 30 cm high design is used, for example, when the groundwater level is high. The 60 cm high design can be stacked on top of each other up to an installation depth of 9.5 m. It is particularly suitable for infiltration trenches that cannot be laid flat. The system is very easy to install without any connector elements. The area above the TÜV-certified system is available for other uses, such as truck access roads or parking spaces. A flushing and inspection shaft enables the control and cleaning of the distribution pipe.
![[Translate to English:]](/fileadmin/_processed_/e/1/csm_Wildau_285cd4cee1.jpeg "[Translate to English:]")
