A secant pile wall consists of overlapping (secant) piles to form structural or cutoff walls and achieve the required water tightness. The design can incorporate steel bar or beams for reinforcement and anchors can provide additional lateral support, if needed.
Secant pile walls consist of reinforced and non-reinforced piles. The unreinforced piles are usually installed first and consist of cement/bentonite or weak concrete. The reinforced piles are then installed and the reinforcement can be either cages or I-beams.
When deflection criteria is tight, secant pile walls can be retained by anchors or strutting systems either as temporary or permanent retention.
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To maintain verticality we usually construct our own guide walls. We use the latest technology, testing regimes and best practice protocols developed over many years to ensure the position, verticality and structural integrity of our pile walls.