Geotechnical

What is Geotechnical Drilling?

Geotechnical drilling is a method of investigating subsurface soils to provide data for engineering design prior to construction of buildings, dams, roadways and other infrastructure sites. The data collected may be used to determine how deep pilings/footings must be installed to provide stability, if a slope is causing previously unnoticed movement of the subsurface, and other conditions that must be considered in construction planning and execution.

Geotechnical Drilling Services

Cascade offers a full range of geotechnical drilling services for subsurface site investigation and placement of data collection instruments. Regardless of the lithology or location, Cascade has the right equipment, experience, and specialized expertise to do the job.

With our diverse drilling fleet and experienced crews, even the most difficult conditions can be overcome. Cascade offers conventional and sonic drilling technologies, including track and truck mounted units and limited access rigs for tight spaces, low overhead conditions, and over-water work, allowing us to access almost any drill site.

Site Investigation

Cascade performs both large and small scale subsurface site investigations across the United States. Our diverse fleet of drilling rigs is suited for any terrain or subsurface condition.

We offer the best in:

Standard penetration testing (SPT’s)
Soil sampling
Rock coring
Permeability and pressure meter testing

Instrumentation

Our crews have extensive experience with the installation of data collection instruments, including:

Piezometers
Inclinometers
Extensometers
Tensiometers

Heavy Infrastructure Support

From dams to levees, bridges to tunnels—Cascade provides specialty applications in support of heavy infrastructure projects. Our full-time EHS staff and experienced management team has earned Cascade access to the most heavily regulated sites, including state and federal projects. We offer services like: