Deep Foundations – Comparing the Displacement of Pipe Shaft Helical Piles

Posted by Jason Herron, P.E., C.W.I. on May 14, 2021 1:00:00 PM

Helical piles are a displacement piling system that moves the soil away from the central axis of the shaft. This has many advantages that include no spoils to remove, but also comes with disadvantages as the shaft diameter increases. The helical piling industry categorizes pipe helical piles into low, medium, and high displacement. Each category has advantages and disadvantages that a specifying engineer must consider when selecting a pile that is applicable and economical for the project.

Low Displacement

The largest volume pipe shaft helical pile used in the North American market are low displacement pipe piles. Low displacement piles are defined as piles with central shaft diameters up to 4.5 inches.

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Topics: Foundations, Civil, Engineering, High Capacity Piles

Pushing Boundaries with High Capacity Helical Piles

Posted by Stephen Scott, EIT on Mar 29, 2021 8:30:00 AM

As the concepts and design of modern structures continue to evolve, so too must the deep foundation systems on which they are founded upon. With the help of modern technology and material science, structural boundaries continue to be pushed and economic considerations are causing a trend toward the increased use of high-capacity piles. In response to the demand, helical piles have expanded beyond light and medium loaded structures and have been engineered to support heavily loaded structures subjected to both compression and tension.

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Topics: Construction, Engineering, Helical Pile Applications, High Capacity Piles, Case Study

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