Installation of two 6m diameter, 10m deep shafts
Trelleborg Offshore UK Ltd
JCT 2016 Design and Build


After a competitive design & build tender, Eric Wright Civil Engineering were awarded the “below ground works” to construct Trelleborg’s new 6781ft2 testing facility that houses two state-of-the-art hyperbaric test chambers.  Following the successful delivery of the first phase we were subsequently awarded the construction of the building that houses the testing facility.

The test chambers simulate extreme deep-water pressure conditions, enabling accurate testing of subsea and drilling equipment.  Hyperbaric testing is the only way to effectively simulate deep-water conditions and to confirm the reliability of product in deep subsea environments.

Phase 1 works consisted of installation of two 6m diameter, 10.5m deep shafts for the installation of the client’s specialist equipment.  The shaft and base were designed to be watertight and gas-proof.

The base was designed to accept the weight of the pressure vessel, estimated at 390 tonnes including contained water.  The tolerance on the level of bearing surface below the vessel is plus or minus 3mm. The works included preparatory works to form foundations, slabs etc. in preparation for the erection of the new building structure.

A serviced portal frame building was then constructed over the test chambers

Key Challenges

The site was located within the current live business site of Trelleborg’s Skelmersdale factory, a fully operational manufacturing facility, the operation of which continued for the entire project.

All site personal were briefed and fully aware of the Trelleborg Contractor Safety Pack, Safe Systems of Work and the Environmental Manual.

Client Feedback

“Very happy. We recommend Eric Wright Civil Engineering”
Stuart Baird
Managing Partner JYM (Clients Consultant)
Civil Engineering / Highways / Structures
Civil Engineering / Highways / Structures
Civil Engineering / Highways / Structures
Civil Engineering / Highways / Structures

Get in Touch

For all enquiries, please get in touch with the team here at Eric Wright.