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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.

Earthquake Damaged Heritage Church Re-levelled with JOG

The heritage listed St Paul’s Church in Tai Tapu, Christchurch, was significantly damaged during the earthquakes that hit New Zealand’s South Island in 2010 and 2011. Constructed in the early 1930s, St Paul’s Church is a category one heritage-listed building with foundations of locally quarried rubble stone. Mainmark recommended JOG Computer-Controlled Grouting (JOG) as the most suitable solution to treat the liquefied ground conditions, stabilise the rubble foundation and relevel the building, without causing further damage to the brittle masonry façade.

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