Helical piles are structural underpinning elements comprised of a steel shaft fitted with helix-shaped flights that is installed to stabilize existing foundations by transferring the structural load to an underlying competent stratum.
- Structural support
- Foundation underpinning
The helical pile is hydraulically advanced (screwed) into the ground to design depth. During installation, torque is monitored to ensure the required pile capacity is achieved. A detailed understanding of the subsurface conditions is necessary to properly interpret torque conversion. Load transfer is accomplished via a bracket connected to the underside of the foundation to be stabilized.