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. This fact allows them to transfer forces to a larger area of soil than would otherwise be the case.
Geogrids are commonly made of polymer materials, such as polyester, polyethylene or polypropylene. They may be woven or knitted from yarns, heat-welded from strips of material, or produced by punching a regular pattern of holes in sheets of material, then stretched into a grid.
TerraGrid ® RX Geogrids: Field-proven U.S. standard unbalanced (rectangular) aperture, punched-and-stretched, polypropylene biaxial geogrids that have been the standard in the United States since their introduction.
- ODOT Geogrid – RX1100 and RX1200