testing screw pile foundations for an eco-house

Specifying the correct ground screws and helical screw piles for your project foundations

RADIX Ground Screws and Extendable Screw Piles support buildings and structures across all sectors. Whether you're embarking on commercial or residential developments, understanding their load-bearing capacities in site-specific ground conditions is paramount.

Our teams are seasoned experts in conducting site-specific surveys and screw pile testing, having successfully tested to depths exceeding 16m and 200kN per screw pile, as well as in a variety of challenging locations and ground types.

We take pride in supporting the vision of our customers on the right foundations and going to the depths required to provide the empirical data to achieve the loadings as specified by your structural engineer.

testing screw pile foundations for a battery energy storage system

Testing screw pile foundations to project specifications

At RADIX, we follow a rigorous process to conduct surveys and screw pile testing in accordance with EN 1997-1 (EC7) standards.

Utilising our range of industry-leading testing equipment, we can install and determine the load-bearing capacities of our comprehensive range of screw piles of various diameters and lengths specific to your project’s requirements and engineers’ specifications.

With capabilities to record compression values exceeding 150kN and tensile forces of 120kN per screw pile, we can either test to achieve the required loadings specified by your engineers or test to failure if the loadings are not yet known.

Once we understand the requirements of your project and anticipated loadings on its foundations, we will organise a programme of works to install and test a series of screw piles at your site and to the depths required to reach load-bearing strata.

During the testing process, deflection on the ground screw or extendable screw pile is carefully monitored and recorded, with pressure applied incrementally into the system to simulate loads right up to the engineer’s required specified load or through to the point of failure.

All recorded values are delivered within a comprehensive report outlining the findings of our survey and testing, including specifying the screw pile foundation solution and their loadings to safely secure your project.

With head offices based in Essex and Dundee, and installation partners across the country, our screw piling engineers support projects across all corners of the UK.

Contact our team to discuss how RADIX can advance your next project.

tensile testing helical piles for a temporary works project

What type of testing is required for various projects

Testing is critical for understanding the load-bearing capacities of screw pile foundations in the various ground conditions that might be encountered across a site, especially where the ground is soft or silty, chalky, or where additional forces might be experienced such as from wind.

Buildings and structures of significant scale and weight, such as housing, holiday lodges, battery storage units, bridges, etc., should be supported by an engineer to correctly specify the groundworks and required loading values to support your project.

Structures with large surface areas, such as ground-mounted solar arrays, event staging or art installations, require tensile testing to measure the uplift forces that will impact the structure, especially in open and wind-exposed locations.

Invest in the equipment to conduct site surveys and screw pile testing

At RADIX, as well as delivering our testing and installation services across the UK, we also manufacture, stock and supply the range of industry-leading equipment we deploy.

Our compression, tensile and horizontal testing kits with digital plunge indicators enable the most accurate recording of data to determine the correct specification of ground screws and extendable screw piles for your projects.

compression screw pile testing kit

150kN Compression Test Kit

A modular kit to record the compression values of screw piles up to 150kN in all ground types.

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tensile screw pile testing kit

120kN Tensile Test Kit

A compact testing kit to record the tensile forces of screw pile foundations up to 120kN.

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horizontal screw pile testing kit

60kN Horizontal Test Kit

Record the lateral forces of screw piles up to 60kN.

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RADIX Product Catalogue

RADIX Product Catalogue

Discover our full range of efficient, low-carbon screw pile foundations and industry-leading equipment here on our site, in our brochure, or give our friendly team, and we’ll be happy to help.

Download our Catalogue