The Suburban Rail Loop (SRL) was announced by the Victorian Government as a city and state shaping program of investments and policy initiatives (SRL Project) that transformed Victoria’s public transport system, boosts productivity, and delivers urban renewal outcomes for Greater Metropolitan Melbourne.

The SRL Project delivered a 90 kilometre orbital rail line connecting every major railway line from the Frankston line to the Werribee line, with a connection to Melbourne Airport, and includes several new Stations, three new transport super hubs (at Clayton, Broadmeadows, and Sunshine) and integrated precinct developments associated with the new Stations.

BG&E was engaged to deliver Work Package C (WPC) – Tunnels and Civil – Cheltenham to Glen Waverley.

The BG&E Materials team

• Developed a comprehensive durability report based on geological and hydraulic assessments, outlining the project’s lifespan expectations and potential challenges.
• Integrated findings from geological and hydraulic assessments to forecast potential durability issues over the project’s lifecycle including the impact of existing landfill location that posed additional risk to durability.
• Conducted a thorough assessment of deterioration mechanisms for both concrete and steel components involved in the project.
• Evaluated risks and opportunities throughout the design life of the project, considering factors such as material selection, construction methods, and environmental conditions.
• Performed detailed analyses of materials to ensure durability in various conditions, including atmospheric exposure and underground environments with varying soil aggressivity.
• Utilised scientific principles and engineering standards to select materials with appropriate properties for the project’s specific requirements.
• Ensured compliance with relevant industry standards, codes, and regulations governing durability requirements including PS&TR requirements.
• Maintained detailed documentation of all design decisions, analyses, and assessments related to durability considerations.
• Provided a value for money report to identify opportunities, risks, and maintenance regimes.