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Soldier Piling
Soldier piles, also known as king piles or Berlin walls, are constructed of wide flange steel H
sections spaced about 2 to 3 m apart and are driven prior to excavation. As the excavation
proceeds, horizontal timber sheeting (lagging) is inserted behind the H pile flanges.
The horizontal earth pressures are concentrated on the soldier piles because of their relative
rigidity compared to the lagging. Soil movement and subsidence is minimized by maintaining the
lagging in firm contact with the soil.