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New Zealand
GovernmentSoil ReplacementTerefil®
Redevelopment of Wainuiomata High School using Terefil Cellular Concrete
Due to its complex history and proximity to multiple faults, the school faced unique geological challenges. To meet the Ministry of Education’s requirements amidst issues like soil liquefaction and non-uniform conditions, our geotechnical design team chose Terefil cellular concrete soil replacement. This solution met density and strength requirements while reducing the load on the underlying soft soils, enabling faster, cost-effective construction. Completed in four stages, the project has already delivered significant benefits, including new classroom blocks and support facilities, with the new cultural precinct opened in March 2023.
CommercialGround ImprovementJOG
Art Gallery Re-supported and Re-levelled
The world-class, modern Christchurch Art Gallery Christchurch Art Gallery Te Puna o Waiwhetū’ was badly shaken by the earthquakes that hit New Zealand’s South Island in 2010 and 2011. As the foundation ground suffered quite severe liquefaction, the 33,000 tonne building lost ground support. The Art Gallery’s footings sank unevenly across the 6,500m2 footprint of the building. Subsidence was as great as 182mm in some places. Using two new, leading-edge technologies, Mainmark re-supported the building and then completely re-levelled the structure. Although the gallery was closed to the public since the quakes, it was occupied by the gallery staff and artworks, during the whole project.
Office Building
Ground Improvement
JOG Computer-Controlled Grouting
Commercial Building Subsidence Remediated
Manufacturing
Void Filling
Teretek®
Tip Top Ice Cream Void Fill and Re-Level Project
Office Building
Ground Improvement
JOG Computer-Controlled Grouting
Christchurch House Raised 60mm & Re-supported
Office Building
Ground Improvement
JOG Computer-Controlled Grouting
Large Christchurch House Re-levelled by JOG
Office Building
Ground Improvement
JOG Computer-Controlled Grouting
Mainmark Fills Voids and Strengthens Ground Under a Paraparaumu Beach Home
Office Building
Ground Improvement
JOG Computer-Controlled Grouting
Mainmark raises and re-levels home in Upper Hutt
Office Building
Ground Improvement
JOG Computer-Controlled Grouting
Mainmark Protects Heritage Listed Auckland Building with Continuous Monitoring
Office Building
Ground Improvement
JOG Computer-Controlled Grouting
Teretek® Brings Turangi Home Back to Level Despite Underfloor Heating Challenge
Office Building
Ground Improvement
JOG Computer-Controlled Grouting
