Helical Piles & Anchors
Compression and uplift capacity of screw piles and helical anchors — individual-bearing and cylindrical-shear methods, with installation-torque QC.
Start Free TrialWhat it does
The Helical Piles tool computes axial compression and uplift (tension) capacity of helical piles and anchors using both the individual-bearing-plate and cylindrical-shear methods, selecting the governing result based on helix spacing.
Capacity is built up from bearing on each helix plus shaft resistance, through layered soil profiles. An installation-torque correlation links predicted capacity to the torque-to-capacity ratio for field QC.
Results are presented in a formatted PDF report with per-helix contributions, the governing failure mode, and the target installation torque.
Methodology
ICC-ES AC358
Capabilities
- Compression and uplift (tension) capacity
- Individual-bearing and cylindrical-shear methods
- Single- and multi-helix configurations
- Layered cohesive and cohesionless soils
- Installation torque-to-capacity correlation
- Square and round shaft resistance
- Group reduction for closely spaced piles
- LRFD and ASD capacity output
- Formatted PDF calculation report
Scope
Covers axial capacity and torque QC per AC358. Lateral capacity of helical piles is available in the Lateral Pile tool; buckling of slender shafts in soft soils is planned for a future release.