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An earth anchor is a device designed to support structures, most commonly used in геотехничких and конструкција 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.

Earth anchors are used in both temporary or permanent applications, including supporting преградни зидови, превучени јарболи, и циркуске шатре.