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Research papers, University of Canterbury Library

The affect that the Christchurch Earthquake Sequence(CES) had on Christchurch residents was severe, and the consequences are still being felt today. The Ōtākaro Avon River Corridor (OARC) was particularly impacted, a geographic zone that had over 7,000 homes which needed to be vacated and demolished. The CES demonstrated how disastrous a natural hazard can be on unprepared communities. With the increasing volatility of climate change being felt around the world, considering ways in which communities can reduce their vulnerabilities to natural hazards is vital. This research explores how communities can reduce their vulnerabilities to natural hazards by becoming more adaptable, and in particular the extent to which tiny homes could facilitate the development of adaptive communities. In doing so, three main themes were explored throughout this research: (1) tiny homes, (2) environmental adaptation and (3) community adaptability. To ensure that it is relevant and provides real value to the local community, the research draws upon the local case study of the Riverlution Tiny House Village(RTHV), an innovative community approach to adaptable, affordable, low-impact, sustainable living on margins of land which are no longer suitable for permanent housing. The main findings of the research are that Christchurch is at risk of climate change and natural hazards and it is therefore important to consider ways in which communities can stay intact and connected while adapting to the risks they face. Tiny homes provide an effective way of doing so, as they represent a tangible way that people can take adaptation into their own hands while maintaining a high-quality lifestyle.

Audio, Radio New Zealand

Meet a local town hero from Auckland's Northshore - 86-year-old Māori Warden Peggy Hughes. Peggy has been serving in her community as a volunteer for about 60 years and officially as a Māori Warden for almost 50 years. She's won dozens of awards for her services - from working at the 1981 Springbok tour protests, supporting Christchurch residents after the 2011 earthquakes, serving at many memorable Waitangi Day events to the recent Black Lives Matter protests.

Audio, Radio New Zealand

There are hopes an earthquake simulation in Porirua might result in homes being better prepared for a big shake. Houses on Christchurch's Port Hills suffered more damage than houses in other areas during the Canterbury Earthquakes - even though the ground shaking was roughly the same. Now the Earthquake Commission is on a mission to find out why that was - and prevent the same level of damage in a future quake. Checkpoint reporter Logan Church and video journalist Dom Thomas start their report up on a hilly farm above Wellington.

Audio, Radio New Zealand

Education advisors are warning that children could suffer mental health problems for years to come if schools botch their return to the classroom. They say the Christchurch earthquakes and Australian bushfires show teachers should resist the temptation to launch straight back into normal lessons after a major event. Principals are hoping to learn today when they will move into alert level two and how many of their students will be able to return to school. RNZ's education correspondent John Gerritsen reports.

Audio, Radio New Zealand

A family who lived through the 2010 and 2011 Christchurch earthquakes is now in isolation in Spain because of the Covid-19 virus. Spain is currently the fourth most affected country in the world, with more than 2000 new cases reported in the past 48 hours. More than 600 people have died, 90 of which have been reported in the past 24 hours. Yuri Bacas Hosaka, who grew up in Madrid says the family's quake experiences helped prepare them for what they're experiencing right now. Indira asked her how she and her family are coping

Audio, Radio New Zealand

A school leader says the Ministry of Education of wasted millions of taxpayer dollars over years of earthquake repairs, and was obstructive and misleading. The building budget at Christchurch Girls High School has blown out by 50 percent to $40 million and it's not finished, even after five years of work. Mike Lay, who was chair of the board of trustees for most of those years, until 2018, says the ministry botched the job then targeted him when he tried to hold it accountable. He told Phil Pennington about the school's struggle to get the school re-built properly.

Audio, Radio New Zealand

Christchurch red zone residents say the area is experiencing an increasing amount of petty crime and dumped rubbish, due to a lack of people. The red zone was established after thousands of houses - and the land underneath them - suffered severe damage in the 2010 and 2011 earthquakes. Last year (2019), a Regeneration Plan for the area was signed off by the government - which included building walkways, cycleways, forests, wetlands, and sport and recreation areas. That's all designed to get people back into the red zone area - but much of the work is still years away. Logan Church met a resident who told him that in the meantime, things are deteriorating.

Audio, Radio New Zealand

Our managed isolation hotels are too posh and returnees should not be treated like hotel guests with luxuries like free menu choices and drycleaning. That's the verdict from New Zealand woman Toni Foster who has returned to the country to take up a job and has spent the past 11 days in isolation at Ellerslie's Novotel Hotel. Toni says she had expected to return to isolation in accommodation similar to the container village after the Christchurch earthquakes - not a free four or five star hotel which she said some returnees were treating as a holiday. She says returnees should not be treated like hotel guests because they're not paying a cent to be there.

Research papers, University of Canterbury Library

Social and natural capital are fundamental to people’s wellbeing, often within the context of local community. Developing communities and linking people together provide benefits in terms of mental well-being, physical activity and other associated health outcomes. The research presented here was carried out in Christchurch - Ōtautahi, New Zealand, a city currently re-building, after a series of devastating earthquakes in 2010 and 2011. Poor mental health has been shown to be a significant post-earthquake problem, and social connection has been postulated as part of a solution. By curating a disparate set of community services, activities and facilities, organised into a Geographic Information Systems (GIS) database, we created i) an accessibility analysis of 11 health and well-being services, ii) a mobility scenario analysis focusing on 4 general well-being services and iii) a location-allocation model focusing on 3 primary health care and welfare location optimisation. Our results demonstrate that overall, the majority of neighbourhoods in Christchurch benefit from a high level of accessibility to almost all the services; but with an urban-rural gradient (the further away from the centre, the less services are available, as is expected). The noticeable exception to this trend, is that the more deprived eastern suburbs have poorer accessibility, suggesting social inequity in accessibility. The findings presented here show the potential of optimisation modelling and database curation for urban and community facility planning purposes.

Research papers, University of Canterbury Library

Seismic isolation is an effective technology for significantly reducing damage to buildings and building contents. However, its application to light-frame wood buildings has so far been unable to overcome cost and technical barriers such as susceptibility of light-weight buildings to movement under high-wind loading. The 1994 Northridge Earthquake (6.7 MW) in the United States, 1995 Kobe Earthquake (6.9 MW) in Japan and 2011 Christchurch Earthquake (6.7 Mw) all highlighted significant loss to light-frame wood buildings with over half of earthquake recovery costs allocated to their repair and reconstruction. This poster presents a value case to highlight the benefits of seismically isolated residential buildings compared to the standard fixed-base dwellings for the Wellington region. Loss data generated by insurance claim information from the 2011 Christchurch Earthquake has been used to determine vulnerability functions for the current light-frame wood building stock. By using a simplified single degree of freedom (SDOF) building model, methods for determining vulnerability functions for seismic isolated buildings are developed. Vulnerability functions are then applied directly in a loss assessment to determine the Expected Annual Loss. Vulnerability was shown to dramatically reduce for isolated buildings compared to an equivalent fixed-base building resulting in significant monetary savings, justifying the value case. A state-of-the-art timber modelling software, Timber3D, is then used to model a typical residential building with and without seismic isolation to assess the performance of a proposed seismic isolation system which addresses the technical and cost issues.

Research papers, University of Canterbury Library

The earthquake engineering community is currently grappling with the need to improve the post-earthquake reparability of buildings. As part of this, proposals exist to change design criteria for the serviceability limit state (SLS). This paper reviews options for change and considers how these could impact the expected repair costs for typical New Zealand buildings. The expected annual loss (EAL) is selected as a relevant measure or repair costs and performance because (i) EAL provides information on the performance of a building considering a range of intensity levels, (ii) the insurance industry refers to EAL when setting premiums, and (iii) monetary losses are likely to be correlated with loss of building functionality. The paper argues that because the expected annual loss is affected by building performance over a range of intensity levels, the definition of SLS criteria alone may be insufficient to effectively limit losses. However, it is also explained that losses could be limited effectively if the loadings standard were to set the SLS design intensity considering the potential implications on EAL. It is shown that in order to achieve similar values of EAL in Wellington and Christchurch, the return period intensity for SLS design would need to be higher in Christchurch owing to differences in local hazard conditions. The observations made herein are based on a simplified procedure for EAL estimation and hence future research should aim to verify the findings using a detailed loss assessment approach applied to a broad range of case study buildings.

Audio, Radio New Zealand

A heritage advocate says he is over the moon to see a special piece of this country's history restored for future generations to enjoy. Three second world war era gun emplacements have been officially opened at Godley Head near Christchurch. The concrete bunkers and network of tunnels were badly damaged in the 2011 earthquakes and have only now been repaired and had screeds of graffiti removed. At the height of the war, the guns at the entry to Lyttelton Harbour were home to two thousand army personnel. They were the main defence from an anticipated Japanese invasion. The Godley Heads Heritage Trust chair, Peter Wilkins, told Conan Young the restored emplacements will ensure this history is never forgotten.

Audio, Radio New Zealand

A lawyer acting for Christchurch home-owners short changed in earthquake settlements says a new plan announced by the government is likely to run into trouble. Last year in a landmark case, the High Court found the government's claim settlement agency, Southern Response, misled and deceived Karl and Alison Dodds. It ordered the government to pay the couple nearly $180,000. The government has now set up a package for other Southern Response claimants who settled before October 2014. Its estimated about 3000 people will be eligible to benefit. But most of them are already taking part in a class action led by Brendan and Colleen Ross. Their lawyer Grant Cameron speaks to Corin Dann.