North-South Bypass Tunnel, Brisbane, Australia
The CLEM7 Tunnel, known as the North-South Bypass Tunnel during construction, is a new toll road built under the Brisbane River. It comprises two 4.8 kilometre twin-lane tunnels which bypass the city's central business district, significantly reducing congestion.
In addition to being the longest road tunnel in Australia, it is also the most advanced with many safety features. In the event of a fire or explosion, a high-tech ventilation system comprising 100 jet fans will rapidly extract smoke to a longitudinal duct high above the road deck.
Ancon designed and manufactured the stainless steel suspension system used to hold the immense concrete slabs which form the duct.
Each component of the system performs an essential structural function within a highly corrosive environment. The welded sections were subject to particularly demanding quality standards and each underwent an intense test and inspection programme prior to despatch to confirm its integrity.
Ancon also fabricated the 33,000 light gauge stainless steel posts used to support the architectural lining around the tunnel walls. A dedicated production cell produced 1,900 posts per week to meet a strict site schedule.
Leviat is a manufacturer of Ancon specialist products and has a wealth of experience in working with a range of types and grades of stainless steel.
We are delighted to announce that we will be sponsoring a Bear for the 2021 ‘Bears of Sheffield’ sculpture trail, a unique participative public art event that will raise funds for a new, urgently needed, Cancer and Leukaemia ward at Sheffield Children’s Hospital.
Designed to minimise thermal bridging in masonry cavity walls, the patented Ancon Thermal Windpost (TWP2) from Leviat offers up to an impressive 70% reduction in thermal transmission through the span of the windpost.