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

Foundations & Slab Investigations

Ensure you are Building on Solid Foundations

For a complete and concise report you will always require; Non Destructive Testing in the form of GPR, Schmidt Hammer and Covermeter Surveys accompanied by Intrusive Investigations in the form of reinforcement exposure and extraction of cores plus Ground Investigation Surveys.

All of the above can be carried out by HTA's Multi Skilled Workforce therefore reducing the requirement to employ and project manage different companies on site.


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


HTA Foundation Investigation Services

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.

  • Construction details - GPR used to determine the type of foundation present, pile, strip & pad
  • Trial Pitting - determine the depth and extent of foundations
  • Coring Investigations - for deeper and quicker foundation depth determination
  • Ground Surveys - determine ground conditions with respect to ground bearing pressure. This can be carried out by in-situ shear vane, dynamic cone penetrometer (DCP) surveys and Californian bearing ratio (CBR) surveys. Other soil testing on request

HTA Slab 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

  • Construction details - concrete slabs investigated for thickness, compressive strength and reinforcement layout by NDT and intrusive methods, the latter requiring the removal of core samples
  • Foundation Type - GPR used to determine the type of foundation present, pile, strip & pad
  • Ground Surveys - determine ground conditions with respect to ground bearing pressure.

    This can be carried out by in-situ shear vane, dynamic cone penetrometer (DCP) surveys and in situ Californian bearing ratio (CBR) surveys (See adjacent photo).

    Other soil testing on request


Watch the HTA Crew in action

See the new Silver Schmidt Hammer being used on a concrete slab.

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