Mentone Station needed to be relocated, as part of the Level Crossing Removal Program, so site works could proceed. Industrial Demolition Services (IDS) was contracted by SPA (comprised of Lendlease, Acciona, Coleman Rail, WSP, Metro Trains Melbourne, and Level Crossing Removal Program) to present a proposal. The proposal required sign-off from Heritage Council Victoria as the landmark 100-year-old Mentone Down Track Station Building is listed on the Victorian Heritage Register.
IDS undertook the project to move the building to temporary storage to make way for piling work required for a new underground station.
Scope of work
Moving a heritage building suffering significant deterioration provided several challenges. An innovative “outside the box” approach was needed. The solution would need stretch the boundaries of standard industry practices. Sign-off by Heritage Victoria was required for the proposal to be successful.
The work was to be completed within a timeframe where:
- the occupation period was 2 weeks
- trains would be discontinued for 5 days only
Moving a historic building with significant deterioration provided a unique set challenges. Standard industry practice for historic high-profile buildings is to deconstruct the building piece by piece, then store the pieces for subsequent reconstruction.
But this approach was not feasible. The time required for this method exceeded the occupation window. Furthermore, accurate reconstruction of such an aged building in its entirety provided additional challenges.
The solution was to lift the entire building as a whole. This approach required extensive review of the existing structure and detailed calculations of the building weights. Based on these calculations, a design was formulated, then reviewed and approved by an independent 3rd party structural engineer.
Laminated veneer lumbers (LVL’s) were introduced into the structural makeup of the building externally and screwed onto each wall stud to provide diagonal bracing. This was to minimise lateral and torsional stresses encountered during lifting. Two perimeter frames were attached to each wall stud at the top and bottom to increase the stability of the structure during lift.
Sections with significant rot were identified and repaired or excluded, depending on their location within the structure. With the preparation work complete the building was separated from its base and a 250 Ton crane relocated the building to its new position.
The Level Crossing Removal works were able to proceed with the Mentone Station successfully relocated within the occupation window (and time to spare). No damage was identified during the lift. IDS delivered on all fronts with pinpoint accuracy, to the satisfaction of both the Southern Program Alliance (SPA) and Heritage Victoria.