How are Helical Piles used in Geotechnical Construction?

Helical piles have recorded an increasing widespread utility in geotechnical construction. This is a direct result of their versatility, cost-effectiveness, and amazing functionality.

What makes helical piles an attractive option in foundation engineering is their ability to function in compression and tension applications.

Get an estimate today and discover how to get the performance of the conventional deep foundation geotechnical systems from CMI Structural Solutions in New York. Our helical piles ensure low mobilization costs, no spoils, and no vibrations when installing.

Functions of Helical Piles

Helical piles are used to provide foundational support for all types of structures at varying sizes. Like conventional pile-foundations, helical piles (also helical piers or helical anchors) are inserted deep underground to disperse the massive weight lying on their top.

A platform is created using multiple piles so that a building, bridge, or other large structure can rest safely on top.

What are Helical Piles Made of?

Mostly, helical piles for geotechnical systems are hollow round shafts, but at times they are solid square beams. Helical piles are steel-made and come in various diameters and gauges to serve different projects.

The shaft contains one or more screw threads that supply enough downforce as the shaft is screwed into the earth. This is what technically makes it a helical pile. There is a standard angle for the screw, but its shape and size vary depending on the utility and soil specifications.

The pile head consists of a shear lug that fits most machine-controlled hydraulic attachments.

Pile applications involving grout use a lead displacement plate fitted onto the extensions of the shaft. The disc pushes soil from the way of the shaft allowing the concrete to flow.

How Do Helical Piles Work?

Helical pile installation for geotechnical designs employs a corkscrew-twisting technique into the soil. As each pile shaft disappears into the earth, additional poles are attached and bolted into the soil, resulting in a pile shaft that can extend for hundreds of feet below the ground.

In many cases, a single pile can meet the project’s load requirements. In addition, concrete is often included for more robust geotechnical systems.

For grouted columns, concrete is continually poured down from the column sides, succeeding the displacement screw and sheathing the steel shaft.

Helical Piles Applications

CMI Structural Solutions uses helical piles for the foundational construction of many structures. Mostly, they are used in the foundations of robust structures like bridges and commercial towers. Other application areas include boardwalk foundations, pipeline foundations, solar foundations, and even swimming pool foundations.


Contact CMI Structural Solutions in Ontario today for cost-effective and accurate options for helical piles in foundation repair and geotechnical engineering. Our approach is always directed beyond the industry’s limit, and in doing so, we create innovative foundation solutions for all our customers.