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Research papers, University of Canterbury Library

Designing a structure for higher- than-code seismic performance can result in significant economic and environmental benefits. This higher performance can be achieved using the principles of Performance-Based Design, in which engineers design structures to minimize the probabilistic lifecycle seismic impacts on a building. Although the concept of Performance-Based Design is not particularly new, the initial capital costs associated with designing structures for higher performance have historically hindered the widespread adoption of performance-based design practices. To overcome this roadblock, this research is focused on providing policy makers and stakeholders with evidence-based environmental incentives for designing structures in New Zealand for higher seismic performance. In the first phase of the research, the environmental impacts of demolitions in Christchurch following the Canterbury Earthquakes were quantified to demonstrate the environmental consequences of demolitions following seismic events. That is the focus here. A building data set consisting of 142 concrete buildings that were demolished following the earthquake was used to quantify the environmental impacts of the demolitions in terms of the embodied carbon and energy in the building materials. A reduced set of buildings was used to develop a material takeoff model to estimate material quantities in the entire building set, and a lifecycle assessment tool was used to calculate the embodied carbon and energy in the materials. The results revealed staggering impacts in terms of the embodied carbon and energy in the materials in the demolished buildings. Ongoing work is focused developing an environmental impact framework that incorporates all the complex factors (e.g. construction methodologies, repair methodologies (if applicable), demolition methodologies (if applicable), and waste management) that contribute to the environmental impacts of building repair and demolition following earthquakes.

Audio, Radio New Zealand

Cantabrians are still surrounded broken buildings and empty spaces on the 10th anniversary of the devastating 22 February 2011 Christchurch earthquake. The disaster forced 70 percent of the CBD to be demolished. The Government launched an ambitious recovery plan to help it recover in 2012. The Christchurch Central Recovery Plan, dubbed the "blueprint" would dictate the rebuild of the central city. To support it, the Government would complete a series of "anchor projects", to encourage investment in the city and make it a more attractive place to live in. As Anan Zaki reports, the anchor projects appeared to weigh down the progress of the rebuild.

Research Papers, Lincoln University

As a result of the findings and recommendations of the Royal Commission of Inquiry into the Canterbury Earthquake Swarm of 2010-2011 the New Zealand Government has introduced new legislation that will require the mandatory strengthening of all earthquake-prone buildings in New Zealand. An earthquake prone building is currently defined as a building that is less than one third the seismic strength of a new building. If an owner does not wish to strengthen their buildings then they must demolish them. Seismic retrofitting of buildings is a form of property development and as such, the decision to retrofit or not should be based on a robust and soundly conducted feasibility study. Feasibility studies on seismic retrofitting can be particularly challenging for a number of reasons thus making it difficult for owners to make informed and sound decisions relating to their earthquake prone buildings. This paper considers the concept and process of feasibility analysis as applied to earthquake prone buildings and discusses the current challenges posed by such feasibility studies. A number of recommendations are made in an attempt to help develop a best practice model for decision making relating to earthquake prone buildings."

Images, UC QuakeStudies

A photograph of the north side of the ChristChurch Cathedral in Cathedral Square. The front of the building has been propped up with steel bracing but further earthquakes have caused more damage, leaving a gap between the bracing and the wall. The tower has been partially demolished, but the lower section is still visible. Wire fencing has been placed around the entire building. In the background, a crane is rising high above the square.

Images, UC QuakeStudies

A photograph of the north side of the ChristChurch Cathedral in Cathedral Square. The front of the building has been propped up with steel bracing but further earthquakes have caused more damage, leaving a gap between the bracing and the wall. The tower has been partially demolished, but the lower section is still visible. Wire fencing has been placed around the entire building. In the background, a crane is rising high above the square.

Videos, UC QuakeStudies

A video of an interview with Earthquake Recovery Minister Gerry Brownlee and Frank Delli Cicchi, the Grand Central Group Australian and New Zealand general manager, about the demolition of the Hotel Grand Chancellor. The Grand Chancellor is the tallest building in Christchurch, and was severely damaged during the 22 February 2011 earthquake. Fletcher Construction have been chosen to demolish the building.

Images, UC QuakeStudies

A photograph of the north side of the ChristChurch Cathedral in Cathedral Square. The front of the building has been propped up with steel bracing but further earthquakes have caused more damage, leaving a gap between the bracing and the wall. The tower has been partially demolished, but the lower section is still visible. Wire fencing has been placed around the entire building. In the background, a crane is rising high above the square.

Images, UC QuakeStudies

An excavator bunching up scrap metal as part of efforts to clear the site of the demolished Hillary and Marshall Limited building on Manchester Street. A pile of scrapped wooden components can be seen at the back of the site, and a pile of masonry is visible in the foreground.

Images, UC QuakeStudies

A photograph of the site of a demolished building on the corner of Bealey Avenue and Victoria Street. Wire fencing has been placed around the site as a cordon. Signs on the fence indicate that many of the businesses which were in the area have moved and are still open.

Images, UC QuakeStudies

A digitally manipulated image of a broken window on Spicer House. The photographer comments, "One of the office blocks in Christchurch City, New Zealand. As the window has not been fixed I am presuming that this building will be slowly demolished at a later date".

Images, UC QuakeStudies

A photograph of the site of a demolished building on the corner of Manchester and Hereford Streets. To the right, the Treehouse Bar can be seen. Bricks from the façade have crumbled and fallen onto the street. Road cones have been placed in front as a warning.

Images, UC QuakeStudies

A photograph of the former site of Westende Jewellers and Alva Rados, on the corner of Manchester Street and Worcester Street. The building was badly-damaged in the 4 September earthquake and was demolished soon afterwards. A two-storey building was built on the site and completed in July 2012. The building then had to be removed when the decision was made to widen Manchester Street as part of the draft transport plan for central Christchurch. The photograph was modelled after an image taken by Ian McGregor from Fairfax Media in September 2010.

Images, UC QuakeStudies

A photograph of the former site of Westende Jewellers and Alva Rados, on the corner of Manchester Street and Worcester Street. The building was badly-damaged in the 4 September earthquake and was demolished soon afterwards. A two-storey building was built on the site and completed in July 2012. The building then had to be removed when the decision was made to widen Manchester Street as part of the draft transport plan for central Christchurch. The photograph was modelled after an image taken by Ian McGregor from Fairfax Media in September 2010.

Images, eqnz.chch.2010

The September Canterbury earthquake. These pictures were taken of Colombo Street in Sydenham. A lot of masonry in this area has been damaged/fallen down. Ascot TV. This has relocated further south on Colombo Street. Apparently their building on Cranford Street was also severely damaged. Note: these photos were taken on a cellphone; mind the qu...

Images, UC QuakeStudies

A photograph captioned by BeckerFraserPhotos, "An old advertisments which was revealed on a building on Lichfield Street when its neighbour was demolished. The advertisement reads 'New Zealand Candle Co Ltd.' and then adds 'Five Medal, British Sperm', which are brands of candle".

Images, UC QuakeStudies

A photograph of the site of a demolished building on Tuam Street which is being used as a car park. The photograph was taken during the Residential Access Project which gave residents temporary access within the red-zone cordon in order to retrieve items from their homes after the 22 February 2011 earthquake.

Videos, UC QuakeStudies

A video of an interview with Arts Centre CEO Andre Lovatt about the restoration of the Arts Centre after the 22 February 2011 earthquake. The video also includes a tour of the Arts Centre, including the Boys' High School swimming pool and gymnasium which was exposed after another building was demolished.

Images, Canterbury Museum

One landscape colour digital photograph taken on 25 February 2011 showing damage to the Lyttelton Police Station on Sumner Road and London Street. Photograph taken looking west from St Davids Street. In December 2011, the New Zealand Police decided that the Lyttelton Police Station would be demolished. The building, which opened in 1882 was re...

Images, UC QuakeStudies

A digitally manipulated image of damaged Music Centre. The photographer comments, "The destruction caused by the demolition of the heritage buildings damaged in the Christchurch earthquakes looks similar to the scenes in London during the second world war. The building was the Catholic Cathedral College, Christchurch. It was an integrated Catholic co-educational secondary school. It was founded in 1987, but its origins go back more than a 100 years earlier. The college was an amalgamation of two schools: Sacred Heart College for girls, and Xavier College for boys".

Images, Alexander Turnbull Library

A chimpanzee paints with a palette of colours. Context: After the earthquakes in Christchurch buildings and areas were designated green, blue, red or white depending on the degree of damage. Buildings in the 'red' zone were then examined to ascertain whether they should be demolished or restored and sometimes the land itself was deemed unsafe. There have been many controversial decisions made which is the point the cartoon makes. Quantity: 1 digital cartoon(s).

Images, UC QuakeStudies

A digitally manipulated image of Latimer Square. The photographer comments, "It is so nice to stand in the middle of Latimer Square on a bright Winter's day and forget the havoc that is around you. The square has hardly been touched by the Christchurch earthquake, but it is surrounded by demolished and damaged buildings".

Images, UC QuakeStudies

Two diggers on top of a pile of rubble inside the partially demolished Ozone Dressing Sheds building. The photographer comments, "The Ozone must have suffered in the February earthquake more than people thought. They were starting to repaint it inside, but it looks like they must have run out of filler".

Images, UC QuakeStudies

A photograph of two workers standing in the site of a demolished building on Tuam Street which is being used as a car park. The photograph was taken during the Residential Access Project which gave residents temporary access within the red-zone cordon in order to retrieve items from their homes after the 22 February 2011 earthquake.

Images, UC QuakeStudies

A photograph of Brandon, Elizabeth Ackerman and Danica Nel on the site of a demolished building on Tuam Street. The trio can be seen wearing hard hats and florescent vests. The photograph was taken during the Residential Access Project which gave residents temporary access within the red-zone cordon in order to retrieve items from their homes after the 22 February 2011 earthquake.