A geogrid is geosynthetic material used to reinforce soils and similar materials. The principal function of geogrids is for reinforcement. For 30 years biaxial geogrids have been utilized in pavement construction and soil stabilization projects throughout the worldwide. Geogrids are commonly used to reinforce retaining walls, as well as subbases or subsoils below roads or structures. Soils pull apart under tension. Compared to soil, geogrids are strong in tension.