What Is A Secant Pile Wall?

Secant pile walls are a common alternative to diaphragm walls in some construction projects, particularly where obstructions are anticipated or where space is at a premium in urban developments. Secant walls offer more flexibility compared to diaphragm walls and can be installed in more compact operations.

What Is A Secant Pile Wall?

Secant pile walls are a type of retaining wall that are formed by drilling a series of overlapping concrete piles, each of which is reinforced by a steel beam, to construct a wall.

Secant walls are used prior to excavation to ensure ground retention, with primary piles installed first to achieve sufficient strength before secondary piles are added by partially cutting into each side of the primary piles to ensure a continuous impermeable structure. Each pile usually overlaps by a minimum of 150mm, with the completed closed structure acting as an effective barrier in subsoils that bear water.

What Are The Advantages Of Secant Pile Walls?

Secant walls offer some important advantages over other types of retaining walls, including:

• Minimal disruptive noise and vibration during construction.
• Better construction alignment flexibility in complex sites.
• The ability to manage obstructions, including concrete or steel.
• Improved wall stiffness in comparison to sheet piles.
• Reduced chance of settlement affecting nearby buildings.

Contact Franki Foundations For Secant Pile Wall Installation

For more information about secant pile walls, please get in touch on 01322 936208 or email sales@frankifoundations.co.uk now.