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Established 2004

Ruddlesden geotechnical

Ruddlesden geotechnical provides ground investigation, geotechnical consultancy and contamination assessment services.

Based in Exeter, but covering the whole of the UK, albeit primarily concentrated in the South West, Ruddlesden geotechnical was formed in 2004.

Ruddlesden geotechnical works on behalf of a wide client base, including local, regional and national housing developers, housing associations, commercial developers, building contractors, structural and civil engineers, architects, building consultants, quantity surveyors, local authorities and private individuals.

Development projects range from single dwellings and extensions to large housing estates, multi-storey flats, offices, industrial units, roads, slopes, schools, hospitals and basements.

The services and projects listed on this web-site provide an indication of those undertaken by Ruddlesden geotechnical, but others are carried out. If your requirement is not readily identifiable on this web-site, please contact us as we may still be able to help you.

  • AGS
  • Constructionline
  • CSCS
  • SMAS
  • ECFC trust

Latest news

Recent projects

  • Latest news

    05 Oct 2026

    Everything you always wanted to know about soakaway testing and groundwater monitoring*

    Everything you always wanted to know about soakaway testing and groundwater monitoring* (*but were afraid to ask).This was the title of a recent lunchtime CPD presentation that Simon and Callum recently gave to a company of drainage and civil engineers. Whilst the pun in the title, taken from a Woody Allen film, might have been lost on many of the audience, its content certainly wasn’t. I am all for sharing what we know, particularly if it takes less than an hour, over lunch, and especially if it helps make all of our lives easier and to the benefit of others. Whilst standing up in front of a room and talking for around 40 minutes isn’t my idea of fun, the benefits are great and many, so we are happy to provide a similar talk to others, if anyone fancies it.    Providing a pizza lunch is optional, but always helps with our availability!

    Everything you always wanted to know about soakaway testing and groundwater monitoring*
    Everything you always wanted to know about soakaway testing and groundwater monitoring*

  • Recent projects

    Radon Protection General Requirements

    Although outside the scope of services usually provided, Ruddlesden geotechnical were able to help with a recent enquiry from a private individual. Whilst the details would need to be designed by a suitably qualified engineer, Ruddlesden were able to confirm the general principles of radon protection in ground floor slab construction, with reference to BRE Report BR211 (2023 edition): Radon: Guidance on Protective Measures for New Buildings (including supplementary advice for extensions, conversions and refurbishment projects). All staff are very familiar with this document as, given the company’s location in southwest England, where elevated levels of naturally occurring radon are commonly present, due the underlying geology, almost all geotechnical and contamination reports include a radon assessment.

    BR 211 Radon Protection Measures

  • Recent projects

    Assessment of Groundwater Pressures Critical for Retaining Wall Design

    Long-term groundwater level and pressure monitoring of standpipe piezometers installed in rotary boreholes was undertaken to provide information for the design of a new retaining wall for a school in Dorset. Groundwater pressures were considered to be a key reason for the failure of the existing wall, which appeared to have inadequate drainage and so it was critical that groundwater levels and pressures, and their seasonal fluctuation, were understood for the design of the replacement wall.

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