Contiguous Bored Piles and Secant Piles

Secant-PileA Contiguous bored pile wall is an earth retention system formed by installing closely spaced Bored piles, with a small gap between adjacent piles. In contrast, a Secant pile wall is an earth retention system formed by installing overlapping Bored piles. These walls are designed either as cantilevered or with a variety of supports (ground anchors, walers & struts, etc.). Secant piles are usually selected where there are particular concerns about groundwater inflow, i.e. where there is a high groundwater table and permeable soils.

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Contiguous and secant bored piling works for Outram Community Hospital’s 4 basements’ retaining structures
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Bored piles and Contiguous bored piles for a mixed development project