Earth retention systems are used for a wide range of design requirements and site conditions. The system's flexibility allows it to withstand large differential settlements and conform to a contoured landscape while typically using on-site infill materials. The system's outer cells, when filled with topsoil, provide an ideal environment to support vegetation.
Earth rods are commonly made from either solid copper, stainless steel of copper bonded steel. Among these materials, copper bonded steel cored rod is popular, due to its combination of strength, corrosion resistance, and low cost. Solid copper and stainless steel rods offer a very high level of corrosion resistance at the expense of lower strength.