What is the difference between sheet piling and secant piling?

The advantages of secant pile walls are that, compared to sheet piling methods, they can provide greater wall stiffness. They are also capable of being installed in low headroom and in difficult ground conditions.

What are the different types of sheet pile walls?

Types of Sheet Pile Walls

• Timber sheet piles – These are generally used for temporary structures and braced sheeting in excavation works.
• Concrete sheet piles – These are pre-cast concrete members usually joined by tongue and groove joints as shown in Fig.
• Steel sheet piles – Steel sheet piles are the most common types.

Are secant pile walls permanent?

The perimeter secant wall served as both the permanent structural basement wall and the temporary earth-retention system for the new hospital building.

What is Secant pile wall?

A Secant Piled Wall is a retaining wall constructed for ground retention prior to excavation. The wall is formed by constructing alternating primary (female) and secondary (male) piles where the secondary piles partially cut into either side of the primary piles in order to form a continuous impervious structure.

What are Secant piles used for?

Secant Pile Walls are usually installed as retaining structures and support systems for deep foundations, retaining elements and at the same time load-bearing walls and deep foundations for engineering constructions (e.g. walls and foundations of underground storeys, stand-alone and framed bridgeheads, etc.).

What is Secant piles?

Secant pile walls are created by drilling or augering a series of overlapping concrete piles reinforced with steel beams or rebar to form a wall. After the initial piles are installed and gain sufficient strength, the secondary piles are installed in between the initial piles to create a continuous and impervious wall.

What is a pipe pile?

Pipe piles are a simple, easy to understand type of piling. A prebuilt steel pipe structure is driven into the ground, typically with large impact hammers. The piles remain in place primarily through friction with the soil.

What are the disadvantages of sheet piles?

Disadvantages include: If the soil is rocky or has large boulders, it becomes difficult to installs sheets into it. If you are going to use vibratory hammers or impact hammers to install the sheets into the ground, this can cause neighbourhood disturbance. Most of the sheets are used as temporary structures.

When would you use Secant piles?

What is Secant pile walls?

How is Secant pile installed?

The secant piles are reinforced with either steel rebar or with steel beams and are constructed by either drilling under mud or augering. Primary piles are installed first with secondary (male) piles constructed in between primary (female) piles once the latter gain sufficient strength.