At Site Testing Services (National) Ltd, we’re experts in CBR testing for crane operations, offering fast and reliable ground assessment services all over the UK.
Crane operations put a huge amount of strain on the ground, often through tiny contact areas like crane outriggers, pads, and crane bases. Without proper ground data, even ground that looks firm can still cause problems with settlement, instability, or costly delays.
We help lift planners, engineers, and contractors get on with their work safely by providing on-the-ground testing services with same-day results, and technicians who really know their stuff.
Why Choose Site Testing Services (National) Ltd?
When crane operations are involved, you need a testing company that really knows its stuff. At Site Testing Services (National) Ltd, we focus on getting you the information you need to make safe decisions and plan lifts with confidence.
Here are some of the reasons our clients choose us:
- We’ve got nationwide field testing services, covering projects all over the UK.
- We deliver same-day results, so you can avoid costly delays to your lift planning and site programme.
- Our pricing is clear and transparent — From £275 for a half day of testing and from £500 for a full day. No hidden fees to pay.
- We provide clear, reliable reporting that you can trust.
Our team knows the pressures of a live construction site and works quickly to deliver the results you need.
👉 Early engagement really does help cut risk, control costs, and avoid those annoying delays.
Clear, Transparent Pricing
We believe ground testing should be cost-effective, easy to plan for, and free of any hidden costs. That’s why our pricing is clear, competitive, and designed to suit the fast-paced world of construction.
CBR testing costs:
- From £275 for half-day testing
- From £500 for a full day’s testing
Pricing depends on site access, the number of test points, and your specific project needs. We’re always happy to give you a clear quote upfront with no surprises.
👉 Early testing can really help identify any potential problems before your crane operations even begin.
Specialist CBR Testing for Crane Operations
We provide CBR tests for crane working platforms, pads, crane bases, and outrigger locations — delivering the accurate data you need to make confident decisions when planning lifts.
Our testing is commonly used for:
- Mobile and crawler crane platforms
- Outrigger pad locations
- Temporary crane bases
- Piling mats and other heavy plant access routes
We pick the test locations that really matter to ensure the results you get genuinely reflect site performance.
👉 Early testing can really help identify potential issues before crane operations begin.
Fast, Nationwide Coverage with Same-Day Results
Crane operations are often programme-critical. Any delays caused by missing ground data can have a big impact on costs and scheduling.
Our provide testing all over the UK, which means we can provide:
- Short-notice attendance when you need it
- Testing carried out directly on site
- Clear, practical reporting that you can build on
Our rapid assessment approach helps give you peace of mind that ground stability has been properly assessed before crane operations get underway.
Reliable Data You Can Build Decisions On
All our testing is done in line with best practice and relevant British Standard guidance. Our results are:
- Reliable
- Consistent
- Clearly presented
- Suitable for lift planning and temporary works design
We focus on delivering the information you need to determine whether the ground can safely support the load you’re putting on it.
What Is a CBR Test?
A CBR test, or California Bearing Ratio test, is a field and laboratory method used to assess the actual strength of soil. The california bearing ratio cbr value compares the resistance of a tested soil sample to a standard crushed rock material under controlled conditions.
The resulting CBR values indicate how well the soil beneath a platform can withstand a given load, making the cbr test essential for crane platforms, temporary works, and heavily loaded areas.
Why a CBR Test for Crane Operations Matters
Crane loads rarely apply evenly to the ground. Forces are transferred through crane outriggers, pads, and crane bases, creating high localised pressure. If the bearing capacity of the ground is insufficient, you can get excessive settlement or failure.
A CBR test for crane working areas lets you assess:
- Safe bearing capacity
- Ultimate bearing capacity
- Ground performance under higher loads
- Whether you need thicker platforms or mats
This information is pretty essential for safety, planning, and compliance.
Understanding Bearing Capacity and Ground Performance
In civil engineering, bearing capacity is the amount of load the ground can carry before failure. CBR testing helps quantify this capacity in a practical, repeatable way.
Engineers use CBR results to:
- Determine platform thickness
- Assess performance under increased pressure
- Evaluate whether the ground surface is suitable for crane access
These assessments are especially important for temporary structures and construction plant.
Modulus of Subgrade Reaction and CBR Data
CBR results often come into play when working alongside the modulus of subgrade reaction — that’s the measure of how the ground reacts when you apply some pressure. This relationship is pretty key for working platforms. You can’t do your job from a platform on shaky ground, can you? Piling pads and crane mats are others where this relationship is especially important.
The modulus value helps engineers get a good handle on how foundations settle, bend under a full load, and how different layers of material work with the earth beneath them.
CBR Testing for Crane Outriggers and Pads
Crane outriggers apply intense pressure through relatively small contact areas. Even where the surface appears competent, the underlying soil may not be able to withstand the load required.
CBR testing is commonly carried out at:
- Outrigger positions
- Working platforms
- Pads and mat locations
- Crane bases
This ensures realistic assessment of the most demanding loading conditions.
Working Platforms: A Safe Haven for Cranes
Working platforms are crucial for distributing crane loads into the ground safely — it’s pretty key to safe operation. The way a platform performs is very much down to the quality of the material, how thick it is, and the strength of the earth beneath.
CBR data lets engineers figure out if a platform is up to the job, how thick it needs to be, and if any reinforcement or site upgrades are needed.
Plate Load and Plate Bearing Tests — What They Do
In some cases, you may need to do a plate load test or a plate bearing test along with CBR. These involve putting an increasing load on a rigid flat plate placed on the ground and measuring how much the ground settles.
A steel plate, often a circular steel plate, is used to replicate real loading conditions. These plate bearing assessments provide direct insight into stiffness and deformation.
Incremental Plate Load Testing
Now an incremental plate load test applies load in stages, so you can get a better view of what happens as the stress builds up. This method is particularly useful for:
- Piling mats
- Building slabs
- Spread foundations
- Heavily loaded crane areas
Plate Load Testing for Civil Engineering
For civil engineers, plate load testing complements CBR data by giving you live measurements of how the site behaves. It helps to confirm design assumptions and lets you know that things are working as they should.
Applications Across Construction and Infrastructure
Our testing services support a wide range of construction projects, including:
- Working platforms
- Piling pads
- Piling rig access routes
- Pavement construction and pavement design
- Building slabs
- Electrical sub stations
- Wind farm developments and wind turbines
Understanding ground conditions is essential in every case.
Trusted Testing for Time-Critical Crane Operations
When crane operations are being planned, there is little room for uncertainty. Ground suitability must be confirmed quickly and accurately.
By combining fast attendance, reliable data, and practical crane-specific experience, we help projects move forward without unnecessary delay.
👉 If your lift programme is time-sensitive, our team can usually accommodate short-notice testing.
Book a CBR Test for Your Crane Project
If you require a CBR test for crane operations or a plate load assessment anywhere in the UK, Site Testing Services (National) Ltd is ready to support your project.
Our services provide the data needed to determine suitability, confirm bearing capacity, and proceed safely with crane operations.
👉 Contact us today to discuss your project, request a quotation, or arrange testing.
