Ground Bearing Capacity Testing for Construction Sites Across the UK
Earth Environmental & Geotechnical provides plate load testing services across the UK, supporting engineers, contractors, and site managers with reliable ground bearing capacity data for design and construction. Speak to our team to book a plate bearing test or discuss your site requirements. For a quote get in touch with our specialist team below.
The Plate Bearing Test (or Plate Loading Test) is an in-situ field test used to determine the ultimate bearing capacity of engineered platforms or soils providing anticipated settlement beneath an imposed load. Unlike laboratory-based soil testing, the plate bearing test assesses ground conditions in their actual in-situ state, providing reliable data directly applicable to engineering and structural design.
By recording settlement at each stage of loading, the test provides a clear understanding of how soils and granular materials behave under real-world conditions, making it essential on sites where ground conditions are variable or where heavy loads will be applied during construction.
Approximate equivalent CBR values can also be derived from the modulus of subgrade reaction using established empirical relationships. All plate bearing tests are carried out in accordance with BS 1377 Part 9: 1990
We carry out plate bearing tests at foundation level, either at the surface or within a shallow excavation. A steel plate is placed on the prepared ground and loaded incrementally using a reaction load, typically a tracked excavator. Settlement is measured at each stage to assess ground performance.
We use a range of plate sizes, up to 720mm diameter, allowing us to match the test setup to the design loading conditions. Our engineers will advise on the appropriate plate size and confirm the reaction load required before mobilising to site.
Following testing, results are compiled into a clear report outlining ground behaviour, bearing capacity and any relevant design considerations. We can typically complete six tests in a day, subject to site conditions and can provide results the following day.
Operating throughout the whole of the UK, we aim to provide a quote within 24 hours and can typically begin works within a few working days depending on your project requirements.
A: This depends on site size, ground variability, and your loading plan. For working platforms, tests are typically required at each crane or piling rig position. Our engineers will advise on the appropriate testing frequency before you commit to a programme.
Q: What reaction load is needed on site?
A: A minimum 8-tonne tracked excavator is required to provide the reaction load. We will confirm the exact specification based on your design loads when you enquire. If you do not have suitable plant available, we can advise on hire options.
Q: Can the test be carried out at depth in a pit?
A: Yes. Testing is most undertaken at foundation level within a shallow excavation. Our team will advise on safe working requirements for any excavation involved.
Q: What is the difference between a plate bearing test and a CBR test?
A: Both tests measure ground strength, but they are suited to different applications. CBR testing is most commonly used for road sub-base and pavement design. Plate bearing tests are better suited to working platforms, crane pads, and foundation design in granular materials.
