Luke Miller-T2d Communications Coordinator
It’s not every day a game‑changing piece of construction equipment enters the picture – let alone via a casual late‑night scroll on social media. Yet that’s exactly how the Brextor, a highly engineered pile‑trimming system from European manufacturer BRC Swiss, found its way onto the radar of Central Zone Project Manager, Nigel Hird. 
What began as a fleeting reel amid a seemingly endless stream of entertaining content, quickly evolved into a deep dive of research, verification, and ultimately, the introduction of the machine poised to transform one of the project’s most demanding, risk‑laden activities.
Far from a gimmick, the Brextor represents nearly a decade of design refinement and technical rigour, offering a smarter, safer, and dramatically more efficient approach to pile trimming. For a project installing more than one thousand deep foundation piles – with a handful completed each day – its arrival couldn’t be more timely! 
Nigel said, “I was on Instagram having a scroll, as you do, and I came across a video of a new machine trimming piles in a much simpler, safer, and effective way than anything I’d ever seen before,” he said.
“It honestly looked too good to be true and I suspected the reel may have been AI enhanced, but after eventually going to visit the manufacturer and seeing the machine in action with my own eyes, I quickly learned that was not the case – it was the real deal.”
What are piles and why are they trimmed?
To appreciate how the Brextor works, and why it’s so beneficial, one must first understand the importance of piling, and why it is such a crucial aspect of South Australia’s largest ever infrastructure project. 
“To support the construction of our Project’s many bridges and the excavation of the lowered motorway, we are installing group of piles at a length of eight to 25 meters into the ground,” Nigel said.
“We must create a deep foundation with a strong capacity, so the structures we build are properly supported as Adelaide lies predominantly on Hindmarsh Clay (relatively unstable), not rock.”
However, with piling, inevitably comes pile trimming – the removal of a small portion of the top of the pile – which, in construction, is an unavoidable requirement to ensure the structure is totally sound.
Nigel said that no less than 400mm is ever trimmed, but due to piling platform and testing requirements, the amount needing to be reduced could reach as much as three metres on certain piles.
A Safety Focus – Minimising risks to our workforce
Safety and Environment Director, Lorene Carter, said that process traditionally involves the use of jackhammers, which introduces several health and safety hazards and risks.
“For example, a standard jackhammer typically weighs around 30 kilograms, which poses a manual handling hazard, while the vibration generated during operation also increases the risk of Hand–Arm Vibration Syndrome (HAVS),” she said.
“In addition, the dust produced during jackhammer use requires engineering controls to minimise exposure to respirable crystalline silica, while the high noise levels generated by the tool can create further health and hygiene risks to be controlled.”
Lorene added, by comparison, the Brextor significantly reduces or eliminates these hazards, reducing the introduction of additional controls and eliminating the use of PPE.
A similar sentiment was echoed by Nigel, who said due to very stringent silica exposure legislation, T2D and BRC Swiss have undertaken trials and prototyping for several months to provide an additional dust extraction system, an innovation ensuring dust created by pile trimming is safely extracted at the source and prevented from becoming airborne.
“Additionally, we’ll be able to trim approximately 10 metres per day on a 1200mm diameter pile, compared to the 1.2 metres we could previously achieve with a team of four working on it all day,” he said.
“This increased productivity will reduce the program allowance for pile trimming by 33.7 weeks, which – although we are not on a critical path – is significant, and is further complimented by the Brextor’s ability to create material that can be reused on site, thus reducing 185 truck movements.”
Now that the Brextor equipment has arrived, Nigel said he and the team are working through the site-based trials and learning curves for operators, who – due to the specific nature of this equipment – are trained off site prior to use, generally in Switzerland.
So, there you have it – a chance encounter online led to the Central team helping to drive the T2D Project’s Sustainability and Safety KRA targets!
