We are currently working on some high profile and interesting projects, from HS2 to Luton Direct Air Rail Transit system. For more information or to talk through your own project requirements please get in touch.
Our Projects
Projects
We take pride in delivering intelligent designs for projects throughout the UK, Europe, the Middle East and globally.
Our clients include contractors, developers, asset owners, public and local authorities, funders, mining companies, legal and insurance companies and other designers. We also collaborate with other specialist engineers, property developers, and multidisciplinary consultants. We have an extensive network across the industry, and its always growing, because we always put our clients first.
Limerick Immersed Tube Tunnel
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Limerick Immersed Tube Tunnel
John Sisk and Son Ltd selected Coffey, A Tetra Tech Company, to provide geotechnical design services for temporary works for a 500-meter-long immersed tube tunnel beneath the River Shannon in Limerick, Ireland. The project, which consisted of installing prefabricated tunnel segments underwater, required €14M of temporary works to retain excavations for the cut and cover sections at each end of the tunnel. Coffey conducted a detailed analysis of the behavior of each wall during construction. By applying our thorough understanding of the difficult ground conditions and the complex construction sequence we were able to manage the risks of overstressing the temporary structure.
Limerick Immersed Tube Tunnel
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Limerick Immersed Tube Tunnel
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Reading Station
Coffey, along with Cass Hayward, were appointed by Network Rail to develop the concept design for the grade separation scheme. This elevated railway aims to relieve congestion by separating the existing main lines from the freight lines at the Westbury Line Junction and the Reading West Chord Junctions to create a grade-separated junction. Subsequent to the main contract being let, Coffey was contracted by Maccaferri Construction Limited to undertake the design work for the load transfer platforms and reinforced soil walls for the new, elevated railway at Reading Station on behalf of Balfour Beatty Civil Engineering. Coffey was selected to design an efficient system that was capable of absorbing the high accidental loading case caused by derailing trains. This type of reinforced soil retaining wall to carry high speed railway loadings in the UK is unusual. Horizontal loads, high vertical strip loads towards the front of the wall, and limited surcharge over the top reinforcing straps created a complex design problem for the team.
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Reading Station
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Reading Station
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Wakefield Eastern Relief Road
The Wakefield Eastern Relief Road (WERR) project consists of 5.5 km of new single carriageway that is proposed to reduce congestion and improve access in the Wakefield area. The scheme is also crucial to future development of new housing in the area.
As part of the proposed road, two bridges were required, the first being a 63 metre single-span overbridge crossing the River Calder and the other being an underbridge through the Wakefield Kirkgate to Normanton railway line embankment.
The key challenge for this project was to ensure minimal disturbance to the river and in particular the railway line. Therefore, the construction strategy was that the bridges were built offline and manoeuvred into place with enabling works done in advance. For the railway underbridge this was manoeuvred into place in a single 56-hour possession over Christmas 2015, and the decks for the river bridge lifted into place over two nights.
The contractor for this project was a joint venture between HOCHTIEF & Buckingham Group Contracting Ltd. who engaged Coffey to undertake temporary work designs, design checks and impact assessments during the construction of the scheme’s bridges and associated permanent works for the road.
Scarborough Spa
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Reading Station
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ICD Brookfield Place, Dubai
The proposed ICD Brookfield Place development located at the Dubai International Finance Centre (DIFC) will comprise a 290 metre tall office tower of approximately 55 stories, with three podium levels above ground and seven basement levels below ground. Construction of a previous development on the site was begun in 2007. Diaphragm walls were installed around three sides of the site, the basement was excavated and piles were installed in the basement floor, approximately 18m below ground level. However, the work stopped in 2009, and the basement was backfilled. The design and construction of the basement and piled foundation of the new ICD Brookfield Place had to be carried out taking into account the constraints posed by the previous development.
Coffey, along with Robert Bird Group developed the concept for the foundations and the basement construction for the new development. Once the contract was awarded, Coffey was then selected to act as independent checkers of the piled foundation and shoring wall design for the basement excavation.
Scarborough Spa
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Reading Station
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Our Current Projects