CET Materials Testing Supports Super Sewer

Unaccustomed as we are to the limelight, CET Infrastructure recently made a “blink and you’ll miss it” cameo appearance on the BBC’s 3-part documentary, The 5 Billion Pound Super Sewer.

Episode one aired on BB2 on 2nd August 2018 and charts the construction of the first stretch of the Thames Tideway Super Sewer in the heart of London. In what is one of the largest civil engineering projects underway in the UK today, a team of 4,000 workers is carrying out the biggest upgrade to the old Victorian sewer system in over 150 years.

Originally designed for a city with two million inhabitants, the old system is struggling to cope with a London population approaching nine million. The new “Super Sewer” involves the construction of a twenty-mile long and seven-metre wide tunnel beneath the river Thames.

CET Super Sewer Image 08 2018
Source: BBC

We have been commissioned by lead contractors Ferrovial Laing O’Rourke to provide structural investigations, environmental services and a broad range of concrete materials testing; both on-site and back in our nearby Harrietsham laboratory.

CET has built up a wealth of experience in concrete segregation testing (Slump Flow, Funnel, L Box, Sieve Segregation, J Ring etc,) for major infrastructure projects in London; including the Bank Station Upgrade works and the  Crossrail C305 project.

Although materials testing represents the smallest fraction of the project costs, it plays a vital role in ensuring standards compliance and is often the key to delivering a project on-time and in budget. It is particularly relevant on a project of this scale, where the main contractors were pouring concrete constantly for 15 days as they built a huge 80-metre deep shaft that connects to the Super Sewer.

“We’re used to fulfilling the role of unsung hero” says Gary Corrigan, Managing Director of CET Infrastructure. “It’s nice to catch a glimpse of the team on the BBC and I’m sure they’ll enjoy their five-seconds of fame. More importantly, it’s great to be associated with a project of this scale and ambition”.

Useful links:

Crossrail C305 Case Study

Materials testing Services Brochure