Case Studies

Geotechnical – Foreshore investigation – Southend-on-Sea

Project overview A F Howland Associates were commissioned to investigate ground conditions for the replacement of ramps and jetties in Southend-on-Sea as part of a maintenance contract. The work required nearshore and offshore investigations… Continue reading

Geotechnical - Subsidence investigation – Norwich

Project overview On Christmas Eve in 2010, a property in Finklegate, Norwich, experienced significant subsidence, with an estimated movement of 300 mm. Consulting Engineers Canham Consulting engaged us to carry out a site investigation… Continue reading

Geotechnical - £28 million 4.5 km foul sewer emplacement – Clacton

Project overview Anglian Water Services Limited commissioned the emplacement of a 4.5 km foul water flood relief tunnel along Clacton seafront. The project posed significant geotechnical challenges, particularly regarding the stability of the London… Continue reading

Geotechnical - Realignment of the B1039 Royston Road – Chrishall, Essex

Project overview The B1039 Royston Road was proposed to be realigned to reduce traffic loadings that were contributing to the failure of an adjacent retaining wall (Chrishall Retaining Wall, Essex County Council Bridge No. Continue reading

Geotechnical - Geotechnical consultancy for trenchless construction – West Coast Mainline Route Modernisation, Staffordshire

Project overview As part of the West Coast Mainline Route Modernisation works, multiple trenchless constructions were required in the form of guided auger bores for utility installations. Perco Engineering Services Limited was tasked with… Continue reading

Geotechnical - Pre-litigation advice – Lancaster

Project overview While conducting directional drilling to install four cable ducts beneath a railway cutting in Morecambe, near Lancaster, the drilling contractor encountered an unexpected obstruction in the solid geology. The initial site investigation… Continue reading

Geotechnical - Site investigation for an 11kV switchboard replacement – Hertfordshire

Project overview We were commissioned to carry out a site investigation for an 11kV switchboard replacement in Hertfordshire. The scope included foundation design recommendations and a risk assessment for human health due to potential… Continue reading

Geotechnical - £116 million Wing Water Supply Programme – 40 km water main and infrastructure

Project overview As part of a framework agreement with Anglian Water Services Limited, we were commissioned to conduct a comprehensive investigation for a proposed 40 km duplication water main. The project extended from Rutland… Continue reading