The Soldier Pile and Lagging System is a common earth retaining method used to support excavation sides, especially in urban areas. It consists of vertical steel beams (soldier piles) installed at regular intervals, and horizontal panels (lagging) placed between them as excavation proceeds.
Lagging Materials:
- Timber boards (most common for temporary works)
- Precast concrete panels (for permanent or deep excavations)
- Steel plates (for high loads or unstable soils)
- Composite or FRP panels (lightweight and corrosion-resistant alternatives)
- This system is cost-effective, fast to install, and suitable for medium-depth excavations in various soil conditions.
