Screw Into Strength

Helical Pier Anchors

Watch helical piers screw into the ground and see how torque readings tell you the capacity. Simple installation, immediate load-bearing, and perfect for Florida Keys coastal foundations.

ft-lbs Torque

Ton Capacity

Rotations

Get Helical Design View Torque Chart

Depth

0 ft

Rotations

Installation Torque

ft-lbs

Estimated Capacity

0 tons

Reference Guide

Torque to Capacity Chart

Standard torque-to-capacity correlations for helical piers in Florida Keys soil conditions.

Shaft Size

Torque (ft-lbs)

Ultimate Capacity

Allowable (FS=2)

2.875" Round

3,500

35 tons

17.5 tons

2.875" Round

5,000

50 tons

25 tons

2.875" Round

7,000

70 tons

35 tons

3.5" Round

6,000

60 tons

30 tons

3.5" Round

9,000

90 tons

45 tons

Installation Process

How Helical Piers Work

Position Equipment

Mini excavator with torque head is positioned at pier location. No large equipment needed.

Screw Into Ground

Helical plates act like a screw, pulling the pier into the soil as it rotates.

Monitor Torque

Torque gauge shows resistance. Higher torque means denser soil and more capacity.

Verify Capacity

When target torque is reached, the pier has achieved design capacity. Ready for load.

Common Questions

Helical Pier FAQs

How do helical piers work in Florida Keys soil?

Helical piers screw into the ground like a corkscrew. The helical plates cut through soft soils and anchor into coral rock or dense sand. As the pier is installed, torque is monitored to verify it reaches the required bearing layer for design capacity.

What torque reading indicates sufficient helical pier capacity?

For residential foundations in the Keys, typical termination torque is 3,500-7,000 ft-lbs for a 2.875-inch shaft helical. The torque-to-capacity factor (Kt) is used to verify ultimate capacity. Higher torque means the helix has engaged dense material.

Are helical piers good for Florida Keys hurricane zones?

Yes, helical piers excel in hurricane zones because they resist both compression and tension loads. This makes them ideal for resisting wind uplift forces common in the Keys. They can be designed for 180 mph wind speed requirements.

How long does helical pier installation take in Monroe County?

Each helical pier typically installs in 15-30 minutes depending on soil conditions. A typical Keys home foundation with 15-20 piers can be completed in one day. No excavation or concrete curing time is needed.

Get Your Helical Pier Design

PE-stamped helical pier calculations for your Florida Keys project. Includes torque requirements, capacity verification, and installation specifications.

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