Quality Engineered Deep Foundations Since 1971

Serving California, Nevada and Arizona

We recognize the need to offer our clients a diverse catalogue of deep foundation options tailored to their specific needs. That’s why Foundation provides a wide variety of drilled deep foundation solutions for your project. From our engineer’s evaluation and design to our construction capabilities in the field, we provide project owners and GCs the solutions best suited for the specific needs of the project.

Auger Cast Piles

Foundation installs two types of auger cast piles. These piles are installed by drilling down to tip elevation required with a continuous flight auger then grouting back out of the hole.

CFA piles are able to penetrate denser soil layers than other installation methods and are economical on the right project.

DCAP piles use a similar technique but laterally displace all or most of the soil when drilling to tip elevation, mainly eliminating spoils. This pile is limited to soil profiles that can be displaced.

Displacement Auger Cast Piles (DACP)

For DACP piles, all or a portion of the soil is displaced laterally rather than excavated. These systems have advantages in many circumstances over conventional CFA piles, mainly eliminating spoils and achieving greater capacities than CFA piles.

Continuous Flight Auger (CFA) Cast Piles

For a cost-efficient, versatile solution, continuous flight auger (CFA) cast piles offer a faster installation in dense soils than other cast-in-place options. A hollow stem auger is used to drill to the necessary depth, then concrete or grout is pumped through the center of the auger to as the soil is extracted, creating a cast-in-place pile.

CIDH (Cast-In-Drilled-Hole)

Drilled shafts, also known as drilled piers, bored piles, caissons or cast-in-drilled-hole (CIDH) piles, are high-capacity deep foundation systems that are typically used in situations where additional structural support or slope stabilization is required.


Micropiles, are high-strength, small-diameter drilled piles with several foundation applications. They can be utilized for building support, tension anchors, and foundation underpinning. Utilizing the extraction of soil, the pile is typically designed to have a steel reinforcing bar surrounded by high-strength concrete grout.

Drilled Displacement Columns (DDCs)

Drilled displacement columns (DDC) are a ground improvement method in which we displace soil and inject concrete to reduce settling and increase stability. These columns are installed by using a piling drill rig that displaces soil while removing minimal spoils.

Helical Piles

Helical piles are a steel screw-in piling and ground anchoring system used for building deep foundations in limited-access conditions. The team at Foundation designs and installs helical piles in various sizes from trusted manufacturers.