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Geophysics at LDE

At LDE, our team of experts will help you understand your site's risk profile with Geophysics.

Geophysics (as well as invasive drilling services) allows us to understand ground subsurface conditions.  When applied to certain projects, geophysics insights can support an otherwise discarded project, substantially change other engineering designs and reduce uncertainty.

The expected ground shaking (intensity and shape of the waveform) and thus earthquake loading on buildings and their foundations is a function of earthquake magnitude and the area’s underlying geology.  Understanding this geology via Geophysical methods helps us understand seismic risk.  This can then be used to support, enhance or negate a design theory before a geotechnical design is undertaken and reduce the risk of a problematic peer review.

Geophysics Capabilities

LDE's capabilities include:

  • Ground Penetrating Radar (GPR)
  • Electromagnetic Induction (EMI) Testing
  • Downhole seismic (SCPT)

Geophysics Consulting Examples

Seismic Site Characterisation:

  • Determination of the natural frequency of the soil (site period): Sub-soil classification (class C/D), to inform the structural design of multi-storey buildings, foundations, dams and retaining structures
  • Liquefaction analysis
  • Seismic hazard assessment

Understanding and studying the subsurface structure:

  • Underground Service Location
  • Geological structure in the near-surface: Lithology, faults, groundwater table
  • Foundation depth
  • Buried objects and
  • Voids/Cavity detection
  • Geological Structure Mapping
  • Geomorphic and Geological Geohazard Mapping.
diagram of landsliding liquefaction and amplification
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