JCB in the Snow

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Geotechnical Services

Herts & Essex Site Investigations are a geotechnical investigation company that undertakes most types of investigative surveys using a number of drilling and sampling techniques.

Existing Foundation Exposures

Existing Foundation Exposures are undertaken in order to aid subsidence claims, these can determine the cause of the structural movements within the location upon the property. Samples are taken by hand augured boreholes or by window sampling techniques, and are taken to our laboratory for later testing. The details of the foundations and the subsoil are noted and recorded for later use within a report. Also 38mm undisturbed or disturbed samples can be recovered by this technique. In-situ bearing capacities are also noted at 0.50m intervals throughout the borehole. All excavations internal or external are replaced to the condition found. The completion of works is generally undertaken by a two man crew and completed within a single working day.

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Hand Augured Boreholes

Hand Augured Boreholes up to a maximum depth of 5.00m. Progression of these techniques can be inhibited by granular material. Disturbed and 38mm undisturbed samples can be retained for later laboratory testing with this technique.

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JCB Trial Pitting

JCB Trial Pitting up to a maximum depth of 4.00m. This technique can be excavated through most materials encountered within the U.K. except for rock material. Disturbed samples can be retained for later laboratory testing. In-situ testing can also be undertaken to determine bearing capacity.

Our JCB Data Sheet can be found on the right hand side of this page.

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Window Sampling

The Conventional or Demountable Rig can also be used in inaccessible locations by the use of scaffolding, winching and cranes, if required. This can achieve information relative to the location of interest and hence design parameters relative to the problem in hand.

Our Window Sampler Data Sheet can be found on the right hand side of this page.

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Shell & Auger Drilling Rig Works

Shell & Auger Drilling Rig works are undertaken to determine the ground conditions at depth. This drilling technique can generally penetrate most soils encountered within the U.K. and as such proves very useful for pile design information. Disturbed and 100mm undisturbed samples are retained using this method of drilling for later laboratory use. The access required for this type of drilling is approximately the size of a 4 x 4 vehicle.

Our Shell & Auger Data Sheet can be found on the right hand side of this page.

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Demountable Drilling Rig

The Demountable Drilling Rig has the capability of the conventional drilling rig although the parts of the rig are detachable and as such the rig can be taken through doorways to work within limited headroom areas etc.

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Upon completion of the above site works, any samples retrieved from the site works will be taken to our laboratory where either, we can schedule testing appropriate to the design requirements and subsoil encountered, or the information gained can be forwarded to our clients for there own testing schedules to be implemented in the design process.

Laboratory Analysis

The laboratory testing our company offers are as follows:
  • - Atterberg Limits
  • - Moisture Content
  • - Particle Size Distribution Grading
  • - So4 & Ph Tests
  • - Triaxial Testing on either 38mm or 100mm dia. samples
  • - California Bearing Ratio Testing (Insitu or Recompacted)
  • - Oedometer Testing

The company has been offering a service of quality site works and reporting for over seventeen years for a clientele ranging from civil and structural engineers, property developers, local authorities, regional authorities and architects, all of which have found our service and technical knowledge of a very high standard. In addition to this our low costs and speedy service puts us well ahead of our competitors.

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