Max headroom

29 April 2008

Construction of the diaphragm walls for a tunnelled section of the new Tugun Bypass in Queensland, Australia is about to be completed on time despite tight restrictions on working height.

The new 8.5 km road will relieve congestion where traffic on the Pacific Highway and the Gold Coast Highway converge, close to the cities of Tugun and Cololangatta. But the new route passes close to then end of the Gold Coast Airport runway, which meant that strict height restrictions had to be imposed on the construction work.

Queensland-based Piling Contractors called on help from Bauer Foundation Australia to carry out the challenging foundations work. Due to the location of the tunnel alignment under the flight path into the airport, a height limit as low as 6.2 m was placed on the work.

Bauer used a Liebherr HS852 Grab Low Headroom fitted with a CBC 25 Cutter and specially made tremmie pipes to build the 16500 m2 diaphragm wall and 60 barrettes. Work on site started in May this year and is due to be completed at the end of this month. According to the site team, the project has gone well and the only difficulty encountered on site was installing the reinforcement cages in 4 to 6 m sections.

Delivered directly to your inbox, World Construction Week Newsletter features the pick of the breaking news stories, product launches, show reports and more from KHL's world-class editorial team.
Longer Reads
Interview: Manitou Group committed to carbon reduction
Manitou CEO Michel Denis discusses green targets, as part of major new CSR project 
Palfinger attack highlights escalation in cyber crimes
What lessons does the Palfinger case have for the wider construction equipment industry?
Computer vision AI sees the way forward
Salman Chaudhary, CEO at EmpiricAI, explains why computer vision AI offers a glimpse of the future of health & safety in the construction sector
Andy Brown Editor, International Construction Tel: +44 (0) 1892 786 224 E-mail:
Simon Kelly Sales Manager Tel: +44 (0) 1892 786 223 E-mail: