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Research papers, University of Canterbury Library

Though rare and unpredictable, earthquakes can and do cause catastrophic destruction when they impact unprepared and vulnerable communities. Extensive damage and failure of vulnerable buildings is a key factor which contributes to seismic-related disasters, making the proactive management of these buildings a necessity to reduce the risk of future disasters arising. The devastating Canterbury earthquakes of 2010 and 2011 brought the urgency of this issue to national importance in New Zealand. The national earthquake-prone building framework came into effect in 2017, obligating authorities to identify existing buildings with the greatest risk of collapse in strong earthquakes and for building owners to strengthen or demolish these buildings within a designated period of time. Though this framework is unique to New Zealand, the challenge of managing the seismic risk of such buildings is common amongst all seismically-active countries. Therefore, looking outward to examine how other jurisdictions legally manage this challenge is useful for reflecting on the approaches taken in New Zealand and understand potential lessons which could be adopted. This research compares the legal framework used to reduce the seismic risk of existing buildings in New Zealand with that of the similarly earthquake-prone countries of Japan and Italy. These legal frameworks are examined with a particular focus on the proactive goal of reducing risk and improving resilience, as is the goal of the international Sendai Framework for Disaster Risk Reduction 2015-2030. The Sendai Framework, which each of the case study countries have committed to and thus have obligations under, forms the legal basis of the need for states to reduce disaster risk in their jurisdictions. In particular, the states’ legal frameworks for existing building risk reduction are examined in the context of the Sendai priorities of understanding disaster risk, strengthening disaster risk governance, and investing in resilience. While this research illustrates that the case study countries have each adopted more proactive risk reduction frameworks in recent years in anticipation of future earthquakes, the frameworks currently focus on a very narrow range of existing buildings and thus are not currently sufficient for promoting the long-term resilience of building stocks. In order to improve resilience, it is argued, legal frameworks need to include a broader range of buildings subject to seismic risk reduction obligations and also to broaden the focus on long-term monitoring of potential risk to buildings.

Images, UC QuakeStudies

The interior of the octagonal corner section of the Cranmer Court building, which housed Plato Creative from March 2008 to November 2009. The photograph showcases the building's intricate wooden ceiling and high windows. A stained glass crest is visible at the bottom of one of the windows reading, "Est. 1874. The spirit of this building lives on". Although designed to house a book depot, this section was used as the principal's office while Christchurch Normal School was operating from the building.

Images, UC QuakeStudies

The interior of the octagonal corner section of the Cranmer Court building, which housed Plato Creative from March 2008 to November 2009. The photograph showcases the building's intricate wooden ceiling and high windows. A stained glass design is visible at the center of the windows with a motto underneath reading, "The spirit of this building lives on". Although designed to house a book depot, this section was used as the principal's office while Christchurch Normal School was operating from the building.

Images, UC QuakeStudies

A pigeon perches in the beams of a damaged building. The photographer comments, "The building next door was demolished after the Christchurch earthquake, which exposed the side of this building with it's very old corrugated iron walls. Some of the sheeting was damaged and exposed parts of the interior. The pigeon was sitting on a bit of wood with the beam above it had a very serious crack. I think you would be nervous as well".

Videos, UC QuakeStudies

A video of a tour through the Christchurch central city Red Zone in July 2011. The video includes footage of Colombo Street, Gloucester Street, the ChristChurch Cathedral, Worcester Street, the Press Building, the Whitcoulls Building, Cashel Mall, and High Street. It also includes an interview with Earthquake Recovery Minister Gerry Brownlee.

Images, UC QuakeStudies

The interior of the octagonal corner section of the Cranmer Court building, which housed Plato Creative from March 2008 to November 2009. The photograph showcases the building's intricate wooden ceiling and high windows. A stained glass design is visible at the center of the window with a motto underneath reading, "The spirit of this building lives on". Although designed to house a book depot, this room was used as the principal's office while Christchurch Normal School was operating from the building.

Research papers, The University of Auckland Library

Unreinforced masonry (URM) buildings have repeatedly been shown to perform poorly in large magnitude earthquakes, with both New Zealand and Australia having a history of past earthquakes that have resulted in fatalities due to collapsed URM buildings. A comparison is presented here of the URM building stock and the seismic vulnerability of Christchurch and Adelaide in order to demonstrate the relevance to Australian cities of observations in Christchurch resulting from the 2010/2011 Canterbury earthquake swarm. It is shown that the materials, architecture and hence earthquake strength of URM buildings in both countries is comparable and that Adelaide and other cities of Australia have seismic vulnerability sufficient to cause major damage to their URM buildings should a design level earthquake occur. Such an earthquake is expected to cause major building damage, and fatalities should be expected.