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CSIRO’s Research Buildings Relevelled and Stabilised

The Brief

The Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia’s national science agency established in 1916, has been at the forefront of groundbreaking research and innovation across environmental science, health, engineering, and technology. As Australia’s leading authority on foundation subsidence, they have developed comprehensive guidelines and best practices for subsidence prevention and repair, including publications like the Foundation Maintenance and Footing Performance: A Homeowner’s Guide.

When CSIRO’s Black Mountain site in Canberra faced significant foundation subsidence issues, with internal concrete slabs sinking up to 40mm and external corners dropping 25mm, they needed a solution that would not only address the structural integrity concerns but also demonstrate the high standards they advocate in their advisory role to homeowners, industries, and government agencies.

The Challenge

The subsidence caused uneven settlement throughout the building, leading to cracks, floor misalignments, and compromised structural integrity. Traditional repair methods, such as concrete underpinning or slab replacement, were deemed unsuitable due to their invasive nature, lengthy timelines, and potential disruption to site operations.

The challenge was to stabilise the foundation and relevel the structure quickly and efficiently, using a method that adhered to CSIRO’s exacting standards for innovation and reliability.

Our Solution

Buildfix implemented our proprietary GeoPoly™ resin technology, a state-of-the-art, non-invasive solution designed for precise and efficient foundation repair.

We began with a comprehensive site assessment to precisely map the extent of the subsidence and identify the optimal injection points. Externally, our team drilled directly beneath the footings to resupport and stabilise them, addressing any voids or weakness at their base.

Next, we strategically drilled to depths exceeding 2 metres for controlled DeepLift injections, targeting the load-bearing soils. This advanced process allowed us to stabilise the foundation while carefully lifting the structure with millimetre precision.
The result was a 22mm lift at the front corner of the building and a 10mm lift at the rear corners, effectively stabilising the structure from front to back.

Internally, the repair process required millimetre precision. Using laser monitoring, we carefully raised the lowest sections of the concrete slab by up to 40mm, creating a flush, level finish while maintaining the concrete slabs structural integrity, ensuring no additional stress or cracking.

The Outcome

meeting CSIRO’s rigorous standards. Cracks were minimised, the external walls were brought back into alignment, and the internal slab was restored to near-perfect level.

The non-invasive approach ensured minimal disruption, allowing the renovations to stay on schedule. CSIRO’s endorsement of GeoPoly™ resin technology underscores its effectiveness in solving complex subsidence challenges.

For homeowners, this project serves as a testament to the reliability of Buildfix’s advanced methods. The same technology trusted by Australia’s leading scientific organisation is available to ensure lasting stability and peace of mind for any property.

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