The Tri-planar Drainage Geonet consists of two outer layers of inclined ribs separated by strong vertical ribs. The whole structure is bonded to a non-woven geotextile.

The high compressive strength resists crushing and the geotextile delivers a high flow rate under the load while preventing soil particles blocking the drainage core.

The top and bottom auxiliary ribs reduce the amount the geotextile intrudes into the core compared to bi-planar composites.

Triplanar geonets are also available without a geotextile.

Download the Drainage Geonet pdf for full information.