With over 80 years’ experience of in situ testing, SOCOTEC offer a high level of technical knowledge and practical support.

In situ testing (also known as field testing) provides a complementary means of determining ground conditions and material parameters to supplement testing carried out by sampling and laboratory testing.

The approach has advantages where recovery of undisturbed samples is problematic (eg sands and gravels), and where the ground behaviour may be controlled by structure (eg bedding and discontinuities) on a larger scale than visible in sampling. In situ testing is also used to obtain information for highways pavement design and for earthworks construction validation.

In situ tests are generally quicker to perform and often provide a depth profile rather than just a single result. SOCOTEC offer a wide variety of test types which may be performed within boreholes and installations, and as standalone activities on the surface and intrusively.

CPT

In Situ (Field) Testing and Monitoring

Probing

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Wireline

In Situ (Field) Testing and Monitoring

Geophysics

  • Wireline geologging (eg televiewer, P-S suspension sonde)
  • Downhole and crosshole seismic
  • Tomography
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  • Wireline geologging (eg televiewer, P-S suspension sonde)
  • Downhole and crosshole seismic
  • Tomography
Dynamic sampling and probing

In Situ (Field) Testing and Monitoring

Borehole Tests

  • Standard Penetration Test (SPT)
  • Borehole vane
  • Permeability (see below)
  • Pressuremeter
  • Geophysics (see below)
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  • Standard Penetration Test (SPT)
  • Borehole vane
  • Permeability (see below)
  • Pressuremeter
  • Geophysics (see below)
Soakaway

In Situ (Field) Testing and Monitoring

Permeability Testing

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Plate Bearing, CBR & EV2 Testing

In Situ (Field) Testing and Monitoring

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FWD

In Situ (Field) Testing and Monitoring

Highway/Earthworks

  • California Bearing Ratio (CBR)
  • In situ density (sand / water replacement)
  • Nuclear density gauge
  • Falling weight deflectometer
  • Dynamic Cone Penetration (DCP)
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  • California Bearing Ratio (CBR)
  • In situ density (sand / water replacement)
  • Nuclear density gauge
  • Falling weight deflectometer
  • Dynamic Cone Penetration (DCP)

In Situ (Field) Testing and Monitoring

Monitoring

  • Groundwater (standpipe, piezometer, VWP, data logger)
  • Groundgas (standpipe, gas clam)
  • Inclinometer
  • Extensometer etc
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  • Groundwater (standpipe, piezometer, VWP, data logger)
  • Groundgas (standpipe, gas clam)
  • Inclinometer
  • Extensometer etc
Brownfield land

In Situ (Field) Testing and Monitoring

Data Processing

Data processing carried out to derive (according to soil type):

  • Soil behaviour type
  • Undrained shear strength, Su
  • Relative density
  • Angle of friction, f'
  • Equivalent SPT N60 value
  • Consolidation parameters (from dissipation tests using piezocone)
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Data processing carried out to derive (according to soil type):

  • Soil behaviour type
  • Undrained shear strength, Su
  • Relative density
  • Angle of friction, f'
  • Equivalent SPT N60 value
  • Consolidation parameters (from dissipation tests using piezocone)

Want to find out more about SOCOTEC's Site Investigation services? Contact us

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