Melbourne’s Government House is a 200 yr old National Trust icon. The building was suffering from severe corrosion of the original cast iron internal wall cavity downpipes. The original pipes had corroded over the years and were leaking causing damage to the internal plaster walls; paint was peeling off, plaster had become mouldy and was falling off. If left untreated it was feared the leakage would cause structural integrity issues. Consulting engineers specified the PermalinerTM cured in place pipe relining system. Asset Rehab Services are the exclusive Victorian licensee of this pipe relining system. Existing issues were that the Government House site is a heritage listed icon. Damage to any fittings or features had to be avoided at all costs. In addition remedial works had to be in keeping with the existing building, replacing the internal drainage system with external downpipes was not an option, down pipe multiple bends at rain heads had to remain in place. In addition the job required height access. Asset Rehabilitation Services had to work around the operational building including Hi-level VIP government functions, and satisfy security clearances. Noise, smell, dust, etc were major issues to be considered throught works and had to be kept to a minimum. Even the surrounding lawns were heritage listed. An 80 tonne crane was utilised on site and load in / load out had to comply with strict guidelines.
Permaliner Pipe Relining was used throughout. Equipment was lifted to the rooftop of the four level building and the entire works were done remotely from the rooftop. CCTV inspection of all pipes was carried out prior to commencement and documented to determine scope of works. Next the Permaliner cured in place inversion system was applied. The beauty of this remote operated system meant that only one point of entry was needed per pipe, downpipes were relined right through to the main storm water pits. Some pipes threaded distances of 20 metres plus.
All works completed within allotted timeframe, within nominated budgets, no variations. Post CCTV inspections confirm successful relining as specified, the downpipes drain effectively to storm water pits with no leakage. The client has since commissioned several additional re-lining works throughout the building complex. All additional works have been successfully undertaken with post CCTV inspection reports provided.