Round Vs. Square Shaft Helical Piers

We manufacture both round-shaft and square-shaft helical foundation piers.  We specialize in these two particular foundation piers because they offer distinct advantages in residential, commercial, and industrial construction. Round Vs. Square Shaft Helical Piers, What’ the difference? We’ll take an in-depth look at each of these foundation piers, along with their function and benefits in different construction applications.

General Function Of Foundation Piers

As we mentioned in a previous post, foundation piers are an engineering solution that helps to take the weight of a structure’s foundation off of the soil, which may not be able to bear it, shifting it instead to firm bedrock or more stable soil in the area.

Round-Shaft Helical Foundation Piers

Magnum’s round-shaft helical foundation piers feature a steel tube shaft with a hollow circular cross section. We’ve found that round-shaft helical piers have a higher section modulus as well as a higher bending capacity.

These foundation piers are most often applied in new construction situations where buckling is the main concern.

Square-Shaft Helical Foundation Piers

Magnum’s square-shaft helical foundation piers feature a high-strength solid steel shaft that delivers a higher capacity-to-torque ratio. We’ve also found that they’re often easier to couple onto and install.

Because they’re not an efficient guard against buckling and have little to no lateral capacity, square-shaft helical foundation piers are best reserved for new construction on firm soils.

Round Vs. Square Shaft Helical Piers, What’ the difference? Now you have some more insight. Should  you have additional questions, contact a sales team member today.