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Berliner walls

Berliner walls are among the methods of deep excavation protection (e.g. for underground parts of buildings, underground installations, etc.). The wall is 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) installed between the piles during excavation. Berliner 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 Berliner wall may be partially recovered (driven or vibrated steel piles) and partially permanent (drilled piles and timber lagging).

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