Perth’s rail network is undergoing a once-in-a-generation expansion, and Revizto is playing a pivotal role in supporting the digital coordination behind it.
By adopting Revizto – an integrated collaboration and communication platform – in its project delivery, CPB Contractors (CPB) has transformed how major linear infrastructure is designed, built, and reviewed across both greenfield and brownfield terrain.
At the centre of this shift are two major Perth projects: the METRONET Yanchep Rail Extension and the METRONET Thornlie–Cockburn Link.
Together, they deliver nearly 30 kilometres of new passenger rail, threading through dense urban networks and high-risk underground utilities. Their successful delivery hinges on coordination at an unprecedented scale.
“We needed a platform that would allow us to collaborate using huge data sets,” said Steven Langley, Digital Engineering Manager at CPB Contractors.
“The project is extensive in terms of its geographical footprint, and we knew that existing tools weren’t good at handling long linear projects.”
Langley’s leadership was instrumental in driving digital adoption across both rail projects. Over several years, he championed a model-first approach to reduce risk, improve efficiency, and elevate communication across hundreds of collaborators. As part of CPB’s Integrated Digital Delivery program—which is driving major investment in digital capability—the team implemented Revizto alongside a suite of digital tools. This supported the safe and efficient delivery of the project, enhanced stakeholder engagement, and helped transform how the project was delivered.
From drawings to data-driven models
Five years ago, CPB took a calculated leap.
Revizto was not widely used in the Australian infrastructure sector at the time, but its ability to federate multiple design models, overlay drawings, streamline issue tracking and facilitate visual communication stood out.
“CPB is heading towards a model-first, data-driven approach to deliver our projects,” Langley said.
“We’re basically building everything and reviewing everything in a virtual world before we ever get it to site.”
Compared to legacy workflows, this shift is profound. Traditional 2D coordination often relies on drawing overlays, informal communication and siloed updates – methods that leave room for error and delay. In contrast, CPB’s digital-first approach has created a shared, live environment for design, constructability, and sequencing reviews. With over 22,990 issues and 15,200 clashes identified and resolved within the platform, the team was able to eliminate countless hours of rework and mitigate risk long before boots hit the ground.
Design to delivery
While the METRONET Yanchep Rail Extension offered a clean slate in the form of 14 kilometres of new track through Perth’s northern growth corridor, the METRONET Thornlie–Cockburn Link was another story altogether. It required threading new infrastructure through dense existing rail corridors, underground services and highly sensitive assets.
“We tried to engage our subcontractors so they produced LOD [level of design] 400, or fabrication-standard information,” Langley said.
“Bringing that into the model and augmenting the LOD 300 design-level information was critical from a construction perspective.”
Revizto enabled CPB to integrate detailed data into a live coordination environment, managing over 19,400 model sheets and drawings, 11,169 file attachments, 4,600 stamps, more than 1,000 reports, and one of the largest combined point cloud datasets ever processed on a WA rail project.
All of this information was centrally visualised and interrogated, allowing the team to identify issues early, reduce ambiguity, and build with confidence.
Coordination for a complex network
The METRONET Thornlie–Cockburn Link in particular presented a formidable challenge: complex staging, constrained access, live overhead electrification, and major service relocations, including the BP Kwinana fuel line that feeds Perth Airport.
“There was a lot of staging that needed to happen and closures – or shuts, as we call them,” Langley said.
“We had some of the longest shuts that have been allowed on the PTA network – including a 20-day shut, the biggest public transport shutdown Perth has ever had.”
Revizto played a crucial role in sequencing and visualising these high-risk phases.
Project managers used the platform to simulate work areas, plan shifts, and brief field teams with model walk-throughs. Visualising spatial constraints helped avoid clashes between overhead line equipment, in-ground utilities, and new civil structures.
“Being able to walk people through the corridor in a virtual environment, showing where assets were going to sit – overheads, gantries, line equipment – and overlay that with what’s underneath was critical,” Langley said.
“It gave everyone the insight they needed to work safely and efficiently.”
Capturing the as-built reality
Revizto’s impact did not stop with design and construction. The platform became central to CPB’s post-construction workflows as well.
“We’re definitely using this through the red line markup process… to essentially create as-constructed models,” Langley said.
Using drone imagery, terrestrial laser scans and point clouds processed through other platforms, the team could overlay real-world data onto design models to validate tolerance and completeness.
This data supports LOD 500 requirements – handing over a verified, navigable record of what was built to the client.
“We can overlay point clouds and verify that what we’ve done is what we said we’ve done,” Langley said.
Training the team
The success of these tools relies not only on their capabilities, but on how they are adopted. For CPB, training and enablement were integral to rollout.
“We created a standard methods and procedures document… down to mouse button presses,” Langley said.
The team delivered fortnightly training during early phases, moving to on-demand support as confidence grew.
Revizto’s intuitive interface was key. Accessible across desktops, tablets and even phones, it gave teams flexible, live access to models, drawings and issue logs. This helped drive adoption across all project stages – from early design to site execution.
“Revizto’s ease of use was crucial,” Langley said.
“Success would not have been possible without that. It allowed people of different skill levels to engage with the model at every stage.”
That accessibility helped break down silos between office and field. Today, it is not unusual to find project managers with Revizto open at their desk or site supervisors using tablet devices to brief crews with 3D snapshots.
Cross-stakeholder collaboration
Across both major rail corridors, Revizto also helped CPB collaborate more effectively with government clients, service authorities and joint venture partners.
“We had an extensive set of digital deliverables written into the contract,” Langley explained.
“LOD 300 at design, LOD 400 for fabrication, and LOD 500 for handover.”
With a project-based licence, CPB was able to invite unlimited users – assigning permission levels from novice to expert.
Client-side teams, subcontractors and government stakeholders could be granted access to specific areas or features, ensuring control without restricting collaboration.
“We invited multiple stakeholders – the client [PTA], ARC, local authorities – Western Power and the Water Corporation were also flown through the model when being consulted during workshops,” Langley said.
“Everyone had access to the same environment. That transparency was essential.”
Revizto’s own team also contributed through ongoing platform support, implementation guidance, and user onboarding – ensuring the tool could evolve with the project.
Return on investment, and time
The returns from CPB’s digital approach are not abstract. Langley estimates that without Revizto, many of the 22,990 issues and 15,200 clashes resolved virtually would have manifested on site – costing time, labour and rework.
By addressing these early, CPB saved significant resourcing. The project avoided hundreds of hours in delays and mitigated critical interface risks before construction sequencing began.
“To be able to plan, sequence, and communicate clearly… it’s been a significant step change,” Langley said.
Langley believes the most meaningful impact of digital delivery is human.
“At the beginning of the project, a lot of the construction team had never been exposed to this sort of technology,” he said.
“But now? I’ve got testimonials coming back from guys in the field saying they don’t want to go back.”
That shift, paired with hard data on time savings, error reduction and stakeholder alignment, puts CPB among the Tier One contractors truly embracing innovation.
“These are legacy projects,” Langley said.
“The METRONET Yanchep Rail Extension and the METRONET Thornlie–Cockburn Link are massive. The impact they’ll have on the community is huge. And the use of this platform has only enhanced what we’ve been able to achieve.”
