When City West Water needed to upgrade the Rothwell West Branch Sewer in Melbourne's west, the project called for more than off-the-shelf pipe. It needed a supplier who could combine technical certification, engineering support, and a logistics chain robust enough to keep a live civil works site moving. That's where Viadux came in — working alongside Global Pipe and Califam Constructions to take the project from specification through to delivery on the ground.
The Brief: A High-Capacity Sewer Upgrade in West Melbourne
The Rothwell West Branch Sewer project, commissioned by City West Water, required a pipe system capable of handling significant flow capacity while meeting strict Australian certification standards. Deliveries began in August 2018, and the scope was substantial: 700 metres of DN600 pipe for open-cut installation, plus 100 metres of pipe rated for trenchless boring beneath an active road — all without disrupting daily traffic.
Global Pipe's engineering team assessed the site conditions and project specifications early, determining that Fiberstrong FW-GRP Pipe Systems was the right fit for the open-cut sections of the pipeline. From there, the team worked through the logistics required to keep a multi-stage civil project on schedule.
The Solution: Certified Pipe, Backed by In-House Engineering
Viadux's GRP Systems range played a central role in the project. Fiberstrong FW-GRP pipe is manufactured to Australian standards, with every batch subject to raw material qualification, stiffness testing, and dimensional verification before it reaches site. That level of quality assurance matters on a sewer upgrade — pipe failure isn't just a cost problem, it's a public infrastructure risk.
Supporting the pipe supply was a team of in-house mechanical and civil engineers who provided technical support and design input at every stage of the project. This is a distinction worth noting for anyone specifying pipe on a civil works job: the product and the engineering backup arrived as a single package, rather than being sourced separately. Viadux's manufacturing partners also brought international engineering resources into the mix, which meant the project team had access to a deeper bench of technical expertise than a standard supply arrangement would typically offer.
Trenchless Boring Without Traffic Disruption
One of the more technically interesting elements of the Rothwell project was the road crossing. Rather than digging up an active road, the project used 100 metres of OD718 HOBAS Jacking Pipe — rated to SN32,000, PN1 — to bore underneath it. This trenchless method meant the sewer upgrade could proceed without shutting down or disrupting the road above. For councils, water authorities, and contractors working in built-up areas, this kind of approach is increasingly the standard expectation rather than the exception, since traffic disruption on live infrastructure projects carries its own cost and community impact.
The Result: A Complete Supply and Logistics Solution
Global Pipe managed the full transport, freight logistics, warehousing, and distribution chain required to get both pipe types to site on schedule. Beyond the physical supply, the team provided ongoing technical support throughout the project lifecycle, along with product training and manufacturer guidelines for the installers and site supervisors doing the on-the-ground work. That combination — product, engineering support, and hands-on training — meant risks were identified and managed early rather than surfacing mid-installation.
The result was a pipeline solution that met City West Water's technical requirements while giving Califam Constructions the support needed to deliver the project without unnecessary delays.
Why This Case Study Matters for Water Authorities and Civil Contractors
The Rothwell West Branch Sewer project is a useful reference point for anyone assessing suppliers for a similar sewer or water infrastructure upgrade. It shows what a certified GRP pipe system looks like in practice, how trenchless jacking pipe can solve for site constraints like live roads, and what a genuinely supported supply chain — from specification through to installation training — can deliver on a real civil works timeline.
For water authorities, councils, and contractors scoping their own pipeline projects, Viadux's broader Industry Case Studies page includes further examples across water, sewer, and irrigation infrastructure. And for teams evaluating pipe systems for an upcoming project, the full Product Range — spanning GRP systems, ductile iron pipe, valves, and fittings — is a good starting point for matching a solution to project specifications.
To discuss a pipeline or sewer project with the Viadux team directly, visit Locations or call 1300 VIADUX (842 389).