CIDH (Cast-In-Drilled-Hole) Experts

Foundation is an experienced and trusted partner for CIDH pile installations on a wide range of projects of varying complexities throughout California, Nevada, and Arizona.

What is a Cast-In-Drilled-Hole Pile?

Drilled shafts, also commonly referred to as drilled piers, bored piles, caissons, or cast-in-drilled-hole (CIDH) piles, are high-capacity deep foundation systems engineered to provide substantial structural support or slope stabilization. These heavy-duty structures are typically used in complex projects where traditional foundation methods may prove inadequate due to soil conditions, load capacities, or environmental factors.

By extending deep into the ground to reach stable soil strata, drilled shafts offer exceptional resistance to various loads, including vertical, lateral, and uplift forces. This makes them ideal for supporting heavy structures such as high-rise buildings, bridges, retaining walls, and water towers.

Advantages

of Installing CIDH Piles

High-Capacity Deep Foundation Option: CIDH piles deliver exceptional load-bearing capacity, suitable for applications such as bridges and high-rise buildings, effectively transferring substantial weight to stable subsurface layers.

Versatility: CIDH piles can be effectively installed in a wide range of soil types, including soft clays, loose sands, and even hard rock formations, providing a reliable foundation solution across various geotechnical challenges

Restricted Access and Low-Headroom Sites: The drilled installation method enables CIDH piles to be constructed in areas with limited access or overhead clearance, where traditional driven piles may not be feasible due to obstructions such as power lines or existing structures.

Minimized Noise and Vibration: Compared to impact-driven piles, the drilling process for CIDH piles generates significantly less noise and vibration, making them a preferred choice for projects in urban environments or near sensitive structures.

Adaptable to Varying Pile Sizes: The wide range of available diameters and lengths for CIDH piles enables a highly flexible foundation design, capable of meeting diverse project requirements and load demands.

Enhanced Stability in Unstable Soil and Seismic Zones: CIDH piles effectively stabilize soil and resist lateral forces, making them a reliable foundation solution in areas with unstable sediments or high seismic activity.

CIDH Pile Advantages:

  • High Capacity Deep Foundation
  • Versatility
  • Restricted Access and Low-Headroom Applications
  • Minimized Noise and Vibration
  • Highly Adaptable to Varying Sizes
  • Unstable Soil and Seismic Zone Advantages

Installation Process

1

Step 1: Precise locations of each CIDH pile are surveyed and marked on the ground, ready to be drilled.

2

Step 2: The selected drilling tool (e.g., auger, core barrel) is advanced into the soil, and the drilling process is continuously monitored to ensure no changes in soil strata or obstructions occur.

3

Step 3: Once the intended depth is reached, any loose soil, cuttings, or slurry at the bottom of the hole must be removed. The hole is cleaned and prepared to receive the grout and reinforcing cage.

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Step 4: The reinforcing rebar cage is lowered into the hole and held in place while the grout is pumped. After the pile(s) have been given time to cure and chipped (if needed), the pile cap is installed.

CIDH Applications


  • Bridge foundations

  • High-Rise buildings

  • Sites with unstable soil conditions

  • Seismic zones

  • Utility structures like transmission towers and other critical utility infrastructure

  • Commercial and Industrial Complexes

  • Retaining walls and slope stabilization

  • Projects with limited access and headroom constraints

Contact Us Today

Foundation’s proven expertise delivers dependable and efficient CIDH pile solutions for your project’s foundation needs. Ensure a stable and long-lasting structure – Contact us today for a consultation and project-specific quote..

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