Tensar rigid geogrids are a flat polymeric material with a rigid grid structure, rigidly bonded at the nodes to form cells with dimensions larger than the size of the edges. They are a category of geosynthetic materials that can be used to provide reinforcement, stabilization, and filtration functions, and they also improve the functions of traditional materials, making construction more efficient, cost-effective, and reliable. Designs using geosynthetics should be based on the functions of the selected materials to achieve the engineering objectives.