Steel screw pile
Helical Pier Systems

Helical Piers are also known as screw piles and helical piles. Helical pier shaft sizes range from 2-7/8" to 36" in diameter with varying wall thicknesses. The table below lists the most common and readily available pipe shaft sizes.

Smaller diameter shafts are mainly used for compression and tension loads where lateral loads are minimal.

Larger diameter shafts are used when the piers are subjected to large compressive loads and/or lateral loads and/or moments of overturn.

The criteria for the appropriate shaft size selection include, but are not limited to:
- axial load
- tension load
- lateral load
- moment of overturn
- torque considerations
- installation equipment
- helix size
- soil condition