Triplanar geocomposites and geonets replace natural materials such as sand and gravel. Triplanar geocomposites and geonets solve a number of these problems which are inherent in natural materials. In fact the use of natural materials creates constructability and quality assurance concerns. These concerns include: side slope stability; geomembrane damage and consistency and quality of the type and depth of fill. Triplanar geocomposites and geonets exceed the properties and performance of conventional biplanar geonets.
Conventional bi-planar geonets are susceptible to significantly decreased flow rates due to geotextile intrusion into the net and limitations in compressive strength. Significant research has proven that the problems encountered with natural materials and bi-planar geocomposites can be overcome with triplanar geocomposite structures.
Conventional geonet products incorporate two overlapping ribs which run at an angle to the leachate flow direction. These criss-crossed ribs require fluids to weave back and forth in order to follow the flow direction. This configuration also allows filtration geotextiles to intrude into drainage net flow channels and further impede flow. TENAX GNT and TENAX TENDRAIN incorporates three structural ribs. The top and bottom ribs keep the filter geotextile layer out of the central flow channel. Moreover, the significantly larger central rib runs parallel to flow direction, resulting in tremendous flow performance, especially for long term flow requirements under heavy normal loads.