King post walls

King Post Walls are constructed from soldier piles (usually made of steel sections, e.g. double T-beams which are driven, vibrated or mounted in a previously drilled hole filled with concrete) and laggings (usually wooden or precast concrete panels) installed between the piles during excavation. King Post Walls are effective for excavation protection, provided that:

  • Ground water level is located closer to the bottom of excavation, and
  • In close proximity there are no facilities prone to settlement.

Upon being used as temporary excavation protection, the elements of a King Post Wall may be partially recovered (driven or vibrated steel piles) and partially permanent (drilled piles and timber lagging).

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