Stormwater infiltration

The infiltration coefficients on the INTEWA property lie between 108 and 109 m/s and are therefore unsuitable for infiltration through a ditch. Alternatively, the roof runoff water is retained via the cistern and evaporated via the greening and irrigation system.


Typical structure of a DRAINMAX infiltration system
1. DRAINMAX tunnel   7. Stormwater distribution
2. Lateral and upper tunnel filling     8. Sedimentation/filter shaft
3. Geotextile9. Flushing shaft
4. Tunnel cover10. Stormwater inlet
5. Topsoil11. Groundwater distance
6. Venting12. Geocomposite underlay