Soil Engineering transfers to the Bachy Soletanche Group

Soil Engineering, the specialist site investigation and grouting division of VINCI Construction UK Limited, is to be transferred in April to the ownership of VINCI’s Soletanche Freyssinet UK geotechnical arm; Bachy Soletanche Group.

The services provided by Soil Engineering complement the specialist civil engineering and foundation activities of the Bachy Soletanche Group. Bachy Soletanche is a specialist in all aspects of modern geotechnics and foundation design, including LDA piling, CFA piling, restricted access mini piling, diaphragm walls, tunnelling and grouting.

Established in 1963, Soil Engineering operates throughout the UK, employing over 150 staff, with an annual turnover of around £15million. Employing largely ‘in house’ resources, the company has in recent years provided its services on many of the UK’s major infrastructure projects including CrossRail, Thameslink, Tideway Tunnel and the M74.

As a member of the Bachy Soletanche Group, Soil Engineering can deliver its professional services and flexible approach whilst being able to rely on the support of a worldwide leader in ground engineering.

Soil Engineering will operate as a new limited Company, Soil Engineering Geoservices Limited, under the ownership of the Bachy Soletanche Group.

Continued Success With Thames Water Tunnels Projects

Following the successful completion of Thames Tunnel over water site investigation between Hammersmith and Deptford in 2011, Soil Engineering have been awarded two associated land based packages of work.

The over land phases of site investigation for the Thames Tunnel project amount to a total value of £1m and comprise the Abbey Mills to Kings Stairs Ground Investigation Project and the Greenwich Connection Ground Investigation Scheme.

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Soil Engineering in Geothermal Loop Trials

As part of a site investigation for a commercial development in London, Soil Engineering have installed a Geothermal Loop for a Ground Sourced Heat Pump (GSHP) trial.

The 40mm diameter loop was installed into an 200mm diameter borehole formed to 70m below ground level. The 70m long loop was installed into the borehole with centralising spacers and the annulus backfilled with a specifically designed thermal grout. The borehole and loop design was specified by Consulting Engineer Arup and the grout was specially mixed to match the thermal conductivity of the geology and lithology of the borehole.

A Thermal Conductivity Test was carried out over a 48 hour period by specialist subcontractor GECCO2, with an additional 24 hour cool down period.

The results of the TCT will be used to design the Ground Sourced Heat Pump well field to meet the anticipated heating and cooling requirements of the commercial development.

Manchester Sewer Network

Soil Engineering have been awarded a £430,000 site investigation contract under the United Utilities Framework Agreement.

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Digital borehole logging for ground investigations

Following the successful completion of two years development and testing, Soil Engineering, has introduced the digital borehole logging system KeyLogbook into its ground investigation business.

The KeyLogbook system, supplied by Equipe Geosolutions jointly with software house Keynetix, is a rugged, tablet computer based system which revolutionises the way site data from ground investigations is captured, recorded and disseminated. Soil Engineering has been the primary Development Partner in taking the system from initial concept to a contract-proven working system. Exhaustive trials were carried out and system enhancements conceived and implemented before the equipment was put into use on its first contract commencing autumn 2011. This involved the formation of approximately 200 boreholes of various types, the majority including installation of groundwater monitoring instrumentation, across multiple sites for a major ‘blue-chip’ Client.

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Force Crag Mine Water Treatment Scheme

Soil Engineering is due to complete its latest commission awarded under The Coal Authorities Framework Agreement for Ground Investigation. The £80,000 project was to investigate Force Crag Mine in the Lake District.

The now abandoned mine, which was worked for Lead, Zinc and Barytes, is known to be a major source of metal contamination within nearby water courses and is also thought to contribute to reduced water quality levels in downstream water courses. These include the River Derwent and Bassenthwaite Lake which is a Special Area of Conservation (SAC) and Site of Special Scientific Interest (SSSI).

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Appointed Sole Provider of Site Investigation Services at Dounreay

Soil Engineering has recently been appointed Sole Supplier of Site Investigation Services under the Dounreay Site Restoration Limited Framework Agreement.

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