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sheet piling[′shēt ‚pīl·iŋ]
a solid wall formed by wooden, reinforcedconcrete, or steel sheet piles driven into the ground. Sheet piling serves as a watertight barrier and prevents the ground from collapsing during the construction of hydraulic engineering installations, such as dams, embankments, lock chambers, docks, and cofferdams. It also provides a temporary enclosure for foundation areas or trenches. Very high sheet piling is equipped with stays, or steel braces, which are located in the upper part of the wall and are anchored in soil not subject to collapse. The piles are driven into the ground by pile drivers or by means of vibration drivers.