Geotechnical Services

Wheal Jane Consultancy has the expertise, experience and equipment to carry out a wide range of geotechnical investigations. Our in-house rigs and plant make Wheal Jane Consultancy a one-stop-shop for site investigation. Our investigation regime can include, but is not limited to;

  • Trial pitting (including soakaway testing in accordance with BRE 365 and percolation testing)
  • In situ tests, including California Bearing Ratios and Standard Penetration tests)
  • Windowless sampling
  • Rotary drilling
  • Cable percussive drilling
  • Groundwater and ground gas monitoring
  • Geotechnical laboratory testing
  • Factual reporting
  • Interpretive reporting, including advice relating to preliminary foundation design, earthworks, excavations, roads/hardstanding design, concrete classification and retaining wall design

We have found that it is to the advantage of our clients to obtain this information as early as possible in the design and procurement stage of their projects. We can attend your site with our plant, or one of our geotechnical engineers can join our client’s groundworks team to work with their own plant and crew.

Some of our commonly requested services include:

  • Preliminary foundation design
  • Piled solutions
  • Shallow foundation solutions
  • Percolation testing
  • Plate bearing testing
  • DCP & CBR testing

Our Geotechnical services cover Cornwall, Devon and the South West.


We provide mine searches for residential and commercial properties, mundic assessment, environmental site investigation services, ground stability testing and geotechnical services throughout Cornwall and the South West.