Geotechnical Drilling

Geotechnical drilling involves assessing the physical properties and structural integrity of subsurface materials. It is crucial in the planning and design of infrastructure and facility projects, as it helps engineers understand soil behavior, foundation requirements, and the potential for subsurface hazards such as soft or hard soils, undocumented fills, and karst.

  • Instrumentation Installations
  • Power Auger Borings
  • Rock Coring
  • Standard Penetration Tests
  • Thin Wall Tube Sampling
  • Texas Cone Penetration Test (TCP)
  • Vane Shear Test (VST)
  • Pressuremeter

Cone Penetrometer Testing (CPT)

Cone Penetrometer Testing (CPT) is a supplemental geotechnical investigation method that uses an instrumented cone, which is hydraulically advanced into the ground at a controlled rate, to measure geotechnical properties of the soils and to delineate soil stratigraphy. The CPT cone can contain numerous instruments capable of measuring such properties as tip resistance (Qt), sleeve resistance (Fs), pore pressure (u), and shear wave velocities (Vs) to develop geotechnical engineering properties.  Additionally, the soil behavior type (SBT) will be inferred from established relationships between tip resistance, sleeve friction, and pore pressure which can assist with soil classification.  Because the CPT is advanced continuously to the termination depth of the test, strata interfaces and changes in soil properties can be more distinctly defined than with intermittent sampling normally conducted through drilling alone.

  • Seismic Piezocone (SCPT)
  • Pore Pressure Dissipation Testing