TRIAXIAL (TRIAX®) GEOGRIDS: To provide an enhanced level of in-plane stiffness, Triax® geogrids are made from a punched polypropylene sheet oriented in multiple, equilateral directions to form triangular apertures. This creates a more efficient product that delivers optimal in-service stress transfer from the aggregate to the geogridhttp://www.asntegeosynthetics.com/geogrid/