Soldier piles and lagging is an earth retention technique that use vertical steel piles with horizontal lagging to retain soil.

Common Uses

  • Support excavations

Technical Details

During construction, H-piles are drilled or driven at uniform intervals along the planned excavation perimeter. Lagging (wood, steel or precast concrete panels) is inserted behind the front pile flanges as the excavation continues. The lagging resists the load of the retained soil and transfers it to the piles. The walls can be designed as cantilever walls, or receive additional lateral support from anchors or bracing.