A soil anchor is a device designed to support a structure and is used in geotechnical and construction applications. Also known as a ground anchor, percussion driven earth anchor, or mechanical anchor, it may be impact driven into the ground or run in spirally, depending on its design and intended force-resistance characteristics.Soil anchors are used in both temporary or permanent applications, including supporting retaining walls and stabilization. Once installed and load-locked, and earth anchor exerts effort to the soil above it, with the soil in turn providing resistance.