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Tangent & Secant Wall

When an excavation takes place next to an existing structure, a secant or tangent pile wall can be an excellent solution. Tangent / secant walls are a series of interlinking or adjacent concrete drilled piers or piles installed along the perimeter of the excavation. This method of earth retention not only allows for a high degree of alignment flexibility, it provides a structurally stiff wall, which minimizes settlement concerns of the adjacent structures.

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