Subsurface Testing

Hydro-Terra Group’s Subsurface Testing is a
low-disturbance subsurface investigation tool.

Subsurface Testing

Hydro-Terra Group’s Subsurface Testing
is a low-disturbance subsurface
investigation tool.

How Subsurface Testing Works

Cone Penetrometer Testing has been used extensively in Europe for over 50 years for hydrogeologic, environmental, and engineering investigations.

The test consists of pushing a 1.41-inch-diameter cone with a 55-degree conical tip through the underlying ground at a rate of 2 cm/sec with up to 20 tons of force. CPT soundings can characterize unconsolidated soils, alluvium, and rock.

Hydro-Terra Group’s CPT soundings use digital electronics to directly measure and log tip resistance, sleeve friction, inclination, and pore pressure and calculate tip/sleeve & pore pressure ratios, Std. Penetration Test (SPT) equivalent, and soils interpretation at 2 cm intervals (ASTM D-5778), supplemented by soil cores. On a maneuverable dual-wheel truck, our standard 4-ton CPT force sounds to 70 feet. For tougher jobs, on-board earth augers generate 20 tons.

How Subsurface Testing Works

Cone Penetrometer Testing has been used extensively in Europe for over 50 years for hydrogeologic, environmental, and engineering investigations.

The test consists of pushing a 1.41-inch-diameter cone with a 55-degree conical tip through the underlying ground at a rate of 2 cm/sec with up to 20 tons of force. CPT soundings can characterize unconsolidated soils, alluvium, and rock.

Hydro-Terra Group’s CPT soundings use digital electronics to directly measure and log tip resistance, sleeve friction, inclination, and pore pressure and calculate tip/sleeve & pore pressure ratios, Std. Penetration Test (SPT) equivalent, and soils interpretation at 2 cm intervals (ASTM D-5778), supplemented by soil cores. On a maneuverable dual-wheel truck, our standard 4-ton CPT force sounds to 70 feet. For tougher jobs, on-board earth augers generate 20 tons.

Advantages of Subsurface Testing

  • Fast, accurate, and generates no soil materials, no borehole stability concerns.
  • Real-time stratigraphic profiling of soils, hydraulic boundaries and conductivity.
  • Stand-alone or with borings & geophysics.
  • Geotechnical/foundation design and sinkhole investigation/remediation data.
  • In-situ laser-induced fluorescence (LIF) capability to identify hydrocarbons.
  • Data for 3-D modeling and visualization.
  • Stern-mount sounds near to structures.

Advantages of Subsurface Testing

  • Fast, accurate, and generates no soil materials, no borehole stability concerns.
  • Real-time stratigraphic profiling of soils, hydraulic boundaries and conductivity.
  • Stand-alone or with borings & geophysics.
  • Geotechnical/foundation design and sinkhole investigation/remediation data.
  • In-situ laser-induced fluorescence (LIF) capability to identify hydrocarbons.
  • Data for 3-D modeling and visualization.
  • Stern-mount sounds near to structures.

Hydro-Terra Group

Resources

Well Volume Calculator

Our tool makes it fast and simple to calculate the volume, thus saving time in the field.

Materials Calculator

Our tool makes it fast and simple to calculate the volume and weight, thus saving time in the field.

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