We are still carrying out essential works on assets with additional safety measures.

Ground Investigations

Ensure you are Building on Solid Foundations

Determination of ground conditions relating to existing structures and planned new construction is paramount to the design engineer.

Therefore, the HTA multi-skilled work force offer a full remit of services to ensure all the relevant data is acquired for accurate decisions to be made.


For engineer safety
it is not possible to excavate a trial pit deeper than 1.25m
without additional shoring measures


Ground Investigation Services

Foundation Investigations by Henderson Thomas Associates

The following list is not exhaustive, however it gives a good idea of the range of services on offer, if there is something you require that is not listed please get in touch, as we will most likely be able to assist.

  • Cable Percussion Boreholes
  • Limited Access Continuous Flight Auger Boreholes
  • Dynamic Cone Penetrometer (TRL & Super Heavy)
  • Window Sampling (Dynamic Sampler Boreholes)
  • SPT Testing
  • Machine & Hand dug Trial Pits

Further Services

In addition to the site testing and the sampling above HTA can extract relevant soil and aggregate samples as required for lab testing to determine soil conditions.

This also includes extraction and sampling of soils for contamination lab testing.


5 Meter Coring!

Watch the HTA Crew in action.

Watch more videos of the HTA crew at work by clicking here


Build a solid foundation with HTA

Take advantage of our Open Door Policy

Even if you do not end up using HTA we are happy to advise on the best course of action for the outcome you wish to achieve.

It is impossible for one company to carry out every project, however we can share our expertise far and wide.

Call: 01707 327 785 or Email: testing@hendersonthomas.co.uk