Sheet piling is an earth retention and excavation support technique that retains lateral tension, by utilizing steel sheets with interlocking edges. Sheets are installed to design depth along the planned excavation perimeter or seawall alignment. The interlocked sheets form a continuous wall for temporary or permanent lateral support with reduced water inflow. Anchors can be installed if additional lateral support is required.
Under normal conditions sheets are installed with a vibratory hammer, but in dense or hard strata they can be driven with an impact hammer. When sites require limited vibrations, sheets can be hydraulically pressed.