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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.

Images, Alexander Turnbull Library

Christchurch City has to be rebuilt after the earthquakes of 4 September 2010 and 22 February 2011. People are being invited to contribute ideas about how to rebuild on a city council website. A group of people look at ideas on computers; a boy comments that 'this one looks just like the old city' and his father comments 'but built fifty miles up the road!' A woman looks at what appears to be pre European Maori pa site and says 'Hone Harawira wants something pre-European!' Another woman looks at a map of the middle of the South Island and says 'Rodney Hide doesn't care as long as Christchurch combines with Timaru and Westport!' Context - Former ACT leader Rodney Hide in his role as Minister for Local Government likes 'supercities' and Hone Harawira has left the Maori Party, fed up with the compromises he believes they have to make to suit their coalition agreement with the National government. He seems to prefer a city that will reflect simpler pre-European times. Colour and black and white versions available Quantity: 2 digital cartoon(s).

Videos, UC QuakeStudies

A video about the earthquake damage to the Christchurch Town Hall. The video shows footage of a tour through the inside of the Town Hall, recorded on a GoPro camera. It also includes interviews with Councillor Glenn Livingstone and Councillor Tim Carter about their impressions of the damage and the work that will be needed to fix the building.

Videos, UC QuakeStudies

A video about the 5.1 magnitude aftershock which hit Diamond Harbour on Wednesday 8 September 2010. The aftershock caused damage to Godley House, the Governors Bay Hotel, and St Cuthbert's Church. The video includes footage of each of the buildings, as well as interviews with the owner of Godley House, the owner of the Governors Bay Hotel, and Bruce Adamson, a Lyttelton local.

Videos, UC QuakeStudies

A video of a media tour inside the earthquake-damaged Hotel Grand Chancellor. The video includes footage of the eastern side of the ground floor of the hotel, the stairwells, some of the rooms, and the view through an opening in the side of the building. It also includes an interview with Jack Harris from Fletchers Construction about the work that is being done to support the structure.

Images, Alexander Turnbull Library

Relates to the three new categories for residential foundation design that have been developed and will be required for repairing and rebuilding homes in Canterbury following the earthquakes of 2010 and 2011. The 'zones' referred to in the cartoon are the colours designated to different degrees of damage to particular areas or buildings in Christchurch after the earthquakes. Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

An interested passerby assumes that a builder will be keen to get some EQC work fixing up Christchurch but the builder replies 'Are you kidding?! Not while EQC is paying us $4500 a week to do its assessments!' Context - The Earthquake Commission (EQC) has employed 414 contractors to carry out the assessments on its behalf, Radio New Zealand reported. Contractors carrying out property inspections of quake-damaged Christchurch homes are being paid about $4000 a week. Contractors are paid $75 an hour, while the builders, who inspect the damage, receive $60 an hour, the broadcaster said. (8 June 2011) Colour and black and white versions available Quantity: 2 digital cartoon(s).

Research papers, Victoria University of Wellington

New Zealand has experienced several strong earthquakes in its history. While an earthquake cannot be prevented from occurring, planning can reduce its consequences when it does occur. This dissertation research examines various aspects of disaster risk management policy in Aotearoa New Zealand. Chapter 2 develops a method to rank and prioritise high-rise buildings for seismic retrofitting in Wellington, the earthquake-prone capital city of New Zealand. These buildings pose risks to Wellington’s long-term seismic resilience that are of clear concern to current and future policymakers. The prioritization strategy we propose, based on multi-criteria decision analysis (MCDA) methods, considers a variety of data on each building, including not only its structural characteristics, but also its location, its economic value to the city, and its social importance to the community around it. The study demonstrates how different measures, within four general criteria – life safety, geo-spatial location of the building, its economic role, and its socio-cultural role – can be operationalized into a viable framework for determining retrofitting/demolition policy priorities. Chapter 3 and chapter 4 analyse the Residential Red Zone (RRR) program that was implemented in Christchurch after the 2011 earthquake. In the program, approximately 8,000 homeowners were told that their homes were no longer permittable, and they were bought by the government (through the Canterbury Earthquake Recovery Authority). Chapter 3 examines the subjective wellbeing of the RRR residents (around 16000 people) after they were forced to move. We consider three indicators of subjective wellbeing: quality of life, stress, and emotional wellbeing. We found that demographic factors, health conditions, and the type of government compensation the residents accepted, were all significant determinants of the wellbeing of the Red Zone residents. More social relations, better financial circumstances, and the perception of better government communication were also all associated positively with a higher quality of life, less stress, and higher emotional wellbeing. Chapter 4 concentrates on the impact of this managed retreat program on RRR residents’ income. We use individual-level comprehensive, administrative, panel data from Canterbury, and difference in difference evaluation method to explore the effects of displacement on Red Zone residential residents. We found that compared to non-relocated neighbours, the displaced people experience a significant initial decrease in their wages and salaries, and their total income. The impacts vary with time spent in the Red Zone and when they moved away. Wages and salaries of those who were red-zoned and moved in 2011 were reduced by 8%, and 5.4% for those who moved in 2012. Females faced greater decreases in wages and salaries, and total income, than males. There were no discernible impacts of the relocation on people’s self-employment income.

Audio, Radio New Zealand

158 other buildings may share CTV construction flaw; US defence chief lifts ban on NZ vessels in US ports; first snapshot of national standards data published today; Korean fishing boat officers fined more than $400,000; and SFO starts investigation into Christchurch earthquake insurance fraud.

Audio, Radio New Zealand

'Designed by an incompetent engineer, supervised by an irresponsible engineer and constructed by a fake engineer'. Those were the views of the Christchurch Earthquake Families Group, heard today, at the first - and only - disciplinary hearing to be held against anyone who designed and built the CTV building in Christchurch.

Audio, Radio New Zealand

Stonemason Mark Whyte puts sculpting commissions aside in order to respond to the Christchurch earthquakes and save classic street facades from the 1870s. Across the Red Zone and 3 generations of the Aires family- Bob, Rob and Suzie are at work on the Heritage Hotel which were the old government buildings.

Images, Alexander Turnbull Library

The cartoon suggests that the Kiwi character has too much of a 'She'll be right' attitude. Refers to a 1996 documentary called 'Earthquake!' which outlined the effects of a major earthquake on Christchurch's eastern suburbs and heritage buildings. The director Grant Dixon says lives could have been saved if officials had heeded the film's warnings. (Stuff: 11 March 2011) Quantity: 1 digital cartoon(s).

Images, Alexander Turnbull Library

The cartoon, which looks like a woodcut depicts a muscled workman wearing a black singlet; his arms are folded and the fingers of one hand are crossed. On his arms are tattoos of a helmet and pick, a '$' symbol, a petrol pump, and a high magnitude earthquake graph. Behind him are buildings, including the Christchurch Cathedral, damaged following the Christchurch earthquake of 22 February 2011. Below the cartoon are the words 'Apologies to Nigel Brown' - a black singlet is a recurring motif in the work of New Zealand artist Nigel Brown. Quantity: 1 digital cartoon(s).

Audio, Radio New Zealand

The debt stricken state-owned enterprise Solid energy is in crisis talks with the Treasury and its banks, two years after the Christchurch earthquakes, insurance companies are blamed for delays in the rebuild, and in dateline pacific Papua New Guinea is building up its military to build roads.

Research papers, The University of Auckland Library

Following a damaging earthquake, the immediate emergency response is focused on individual collapsed buildings or other "hotspots" rather than the overall state of damage. This lack of attention to the global damage condition of the affected region can lead to the reporting of misinformation and generate confusion, causing difficulties when attempting to determine the level of postdisaster resources required. A pre-planned building damage survey based on the transect method is recommended as a simple tool to generate an estimate of the overall level of building damage in a city or region. A methodology for such a transect survey is suggested, and an example of a similar survey conducted in Christchurch, New Zealand, following the 22 February 2011 earthquake is presented. The transect was found to give suitably accurate estimates of building damage at a time when information was keenly sought by government authorities and the general public. VoR - Version of Record

Research papers, University of Canterbury Library

Recent advances in timber design at the University of Canterbury have led to new structural systems that are appropriate for a wide range of building types, including multi-storey commercial office structures. These buildings are competitive with more traditional construction materials in terms of cost, sustainability and structural performance. This paper provides seismic design recommendations and analytical modelling approaches, appropriate for the seismic design of post-tensioned coupled timber wall systems. The models are based on existing seismic design theory for precast post-tensioned concrete, modified to more accurately account for elastic deformation of the timber wall systems and the influence of the floor system. Experimental test data from a two storey post-tensioned timber building, designed, constructed and tested at the University of Canterbury is used to validate the analytical models.

Images, Alexander Turnbull Library

A woman says to a builder 'Christchurch people will really appreciate your help to rebuild - What you construct looks like it's already been hit by an earthquake'. They are standing in front of a very shoddily-built cottage and the garden is festooned with litter. Context - After the Christchurch earthquakes there is a huge emphasis on fast rebuilding with the potential for below standard results.. Quantity: 1 digital cartoon(s).

Images, UC QuakeStudies

A digger being loaded onto the back of a truck. The photographer comments, "After clearing away the remains of a building in Christchurch, New Zealand destroyed by the February 22 earthquake the digger can now be transported to its next destination for destruction".

Audio, Radio New Zealand

Earthquake bus survivor, Mike Ardagh - Christchurch Hospital, Reporter Erina O'Donohue live from Christchurch, Where to obtain water, Murray McCully thanks international community, Cowles Stadium welfare centre closed, Man escapes from 12th floor of Forsyth Barr building, Aussie medics set up field hospital, Schools need significant rebuilding and Fourteen supermarkets closed in Christchurch.

Audio, Radio New Zealand

Christchurch has unveiled an ambitious $2 billion plan to re-create the central city as a green, people friendly, low rise zone, inside a garden. Almost six months on from the destructive February earthquake most of the centre still sits cordoned off, and half the buildings need to come down.

Audio, Radio New Zealand

Hundreds of Christchurch homeowners have discovered extensive damage to the on-sold properties they purchased after the 2010/2011 earthquakes. Licenced Building Practictioner Dan Paltridge talks to Logan Church about what people need to look out for, and what they need to do before buying a home in the city.

Images, eqnz.chch.2010

Here's Prarie, outside our flat, the day after the 7.1 earthquake hit Christchurch. You see the damage to the street, which continued through our flat. We were forced to move out once an engineer examined the cracks in our balcony, walls, floors, and ceilings, and told us the building was unsafe for living. One crack ran from the street, pres...