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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

    20 Aug 2026

    Start over-winter monitoring before it is too late!

    Look at these groundwater monitoring dataloggers! Whilst some loggers are still in the ground, monitoring groundwater levels all year round, these lot were taken out of their boreholes in May or June this year, once they had proven that they had recorded the seasonal groundwater peaks.As we come towards the end of a particularly dry summer, it might seem difficult to think about monitoring groundwater levels when conditions are at their wettest. But there is considerable benefit in starting over-winter groundwater monitoring sooner rather than later.. One year, the seasonal groundwater peak will be in November, and if the loggers don’t go in the ground before then, they won’t be able to record this!With Ruddlesden geotechnical, there is no financial benefit in delaying the start of over-winter groundwater monitoring; we charge the same to start monitoring in September as we do in December

    Start over-winter monitoring before it is too late!
    Start over-winter monitoring before it is too late!

  • Recent projects

    Ground Gas Assessment for Large Residential Development Site

    After completing a Phase 1 contamination assessment, Ruddlesden were instructed to undertake a ground gas risk assessment for a proposed residential development near Rugby. The southern and western boundaries of the site were bordered by an active landfill site and historical landfilling activities had taken place within the southwest of the site. Twelve ground gas monitoring wells were installed to varying depths within the confines of the proposed residential development site. The wells were monitored on twelve occasions following installation with a landfill gas analyser, for oxygen, methane, carbon dioxide and gas flow. Atmospheric pressure and other environmental conditions were also recorded. The results of the monitoring were used to produce a gas screening value (GSV), which was used in the assessment to ascertain whether any protective measures were required for new dwellings. The results indicated that a suitably installed gas proof membrane and subfloor ventilation would provide sufficient protection against the levels of ground gas present.

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  • Recent projects

    Ground Improvement, Shropshire

    To inform the design of an embankment for a proposed highway, as part of the residential redevelopment of a site in Shropshire, Ruddlesden geotechnical were instructed to undertake a geotechnical investigation and assessment. The geotechnical investigation comprised cable percussive boreholes, which encountered a succession of Alluvial soils, including peat, silt and clay to depths in excess of 10m depth. Analyses indicated that the surcharge of the embankment would consolidate the underlying soils by virtue of their low strength, which would likely affect the serviceability of the proposed highway. It was also considered that there would be an insufficient factor of safety on the global stability of the embankment. Ruddlesden geotechnical proposed that ground improvement be undertaken, for example by pre-surcharging the ground and installing drainage, to speed-up the consolidation of the underlying Alluvial soils, to reduce the amount of anticipated settlement in the long term to acceptable levels.

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