PHOTO: KIRK HARGREAVES/STUFF Groups of volunteers are clearing sand and silt from liquefaction in the east Christchurch suburb of Parklands after a swarm of earthquakes at Christmas 2011.
Foundations will become more expensive for houses built on liquefaction-prone soil across New Zealand, not just in Canterbury.
Rules about specially designed foundations for new homes on liquefaction-prone sites are being extended to the rest of the country after applying in Canterbury following the earthquakes which started in September 2010.
The Government has given territorial authorities – city and district councils – a two-year transition to map their areas for liquefaction. The changes have been brought in with the six-monthly update to the Building Code.
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