A 10 hour night working window along with strict traffic control and noise pollution limitations were set due to the close proximity of the sewer trunk mains to Brisbane’s densely populated high-rise buildings and popular shopping district.

With these restrictions ruling out the use of bypass pumping, a solution able to perform these critical works in live mains during limited shift hours was needed.

To overcome these significant project challenges, Interflow Pty Ltd, SEKISUI Rib Loc Australia’s installation partner, proposed the use of SPR^®EX technology, incorporating the Expanda^® spirally wound system by RIB LOC^®, a structural lining system strong enough to protect wastewater flows during the scheduled blasting works. 

Having a small site footprint, fast mobilization and demobilization times, and ability to stop the installation process at any time, stakeholders were comforted to know the crew could quickly clear the site and allow traffic to reopen should it ever be required.

Overcoming many constraints, relining works were completed on time, allowing the blasting works to commence on schedule and this game changing infrastructure project to continue.