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Research papers, The University of Auckland Library

In the early morning of 4th September 2010 the region of Canterbury, New Zealand, was subjected to a magnitude 7.1 earthquake. The epicentre was located near the town of Darfield, 40 km west of the city of Christchurch. This was the country’s most damaging earthquake since the 1931 Hawke’s Bay earthquake (GeoNet, 2010). Since 4th September 2010 the region has been subjected to thousands of aftershocks, including several more damaging events such as a magnitude 6.3 aftershock on 22nd February 2011. Although of a smaller magnitude, the earthquake on 22nd February produced peak ground accelerations in the Christchurch region three times greater than the 4th September earthquake and in some cases shaking intensities greater than twice the design level (GeoNet, 2011; IPENZ, 2011). While in September 2010 most earthquake shaking damage was limited to unreinforced masonry (URM) buildings, in February all types of buildings sustained damage. Temporary shoring and strengthening techniques applied to buildings following the Darfield earthquake were tested in February 2011. In addition, two large aftershocks occurred on 13th June 2011 (magnitudes 5.7 and 6.2), further damaging many already weakened structures. The damage to unreinforced and retrofitted clay brick masonry buildings in the 4th September 2010 Darfield earthquake has already been reported by Ingham and Griffith (2011) and Dizhur et al. (2010b). A brief review of damage from the 22nd February 2011 earthquake is presented here

Images, UC QuakeStudies

A girl decorating the chalkboard sign at Gap Filler's "Film in the Gap!" project. The chalkboard outlines the programme for the evening of April 6th, 2011, reading, "Gap Filler: 1st - 10th of April. Free live music and films from 5pm onwards. 5: Radius Kink, 6: Runaround Sue, 7: films: NZ Shorts - 2Cars, 1 Night, Tama Tu, + Forgotten Silver. Bring - cushion, chair, blanket, picnic. Coffee from 4:30pm daily. Ex demolition site. Please be safety aware. Proper footwear must be worn!".

Images, UC QuakeStudies

A girl decorating the chalkboard sign at Gap Filler's "Film in the Gap!" project. The chalkboard outlines the programme for the evening of April 6th, 2011, reading, "Gap Filler: 1st - 10th of April. Free live music and films from 5pm onwards. 5: Radius Kink, 6: Runaround Sue, 7: films: NZ Shorts - 2Cars, 1 Night, Tama Tu, + Forgotten Silver. Bring - cushion, chair, blanket, picnic. Coffee from 4:30pm daily. Ex demolition site. Please be safety aware. Proper footwear must be worn!".

Images, UC QuakeStudies

A chalkboard sign outlining the programme for the evening of April 8th, 2011 at Gap Filler's "Film in the Gap!" project. The sign reads, "Gap Filler: 1st - 10th of April. Free live music and films from 5pm onwards. 5pm: Mundi, 6pm: Lindon Puffin, 7pm: Film - Draquila (90mins). Bring - cushion, chair, blanket, picnic. Coffee from 4:30pm daily. Ex demolition site. Please be safety aware. Proper footwear must be worn!". The sign is stuck to the rear wall of Mitre 10 in Beckenham.

Images, UC QuakeStudies

Two children running across the empty lot in Beckenham that housed Gap Filler's "Film in the Gap!" project. Behind them is a chalkboard sign outlining the programme for the evening of April 2nd, 2011. The sign reads, "Gap Filler: 1st - 10th of April. Free live music and films from 6pm onwards. Saturday: 5pm: The Captain Willis Trio, 6pm: Ed Muzik, 7pm: The Cracks in Everything, 8pm: Film - 4 Houses, 4 Decades (Christchurch Architecture). All welcome! Bring a blanket or cushion. Ex demolition site. Please be safety aware. Proper footwear must be worn!".

Images, UC QuakeStudies

Two men converse on the site of Gap Filler's "Film in the Gap!" project. Behind them is a chalkboard sign outlining the programme for the evening of April 2nd, 2011. The sign reads, "Gap Filler: 1st - 10th of April. Free live music and films from 6pm onwards. Saturday: 5pm: The Captain Willis Trio, 6pm: Ed Muzik, 7pm: The Cracks in Everything, 8pm: Film - 4 Houses, 4 Decades (Christchurch Architecture). All welcome! Bring a blanket or cushion. Ex demolition site. Please be safety aware. Proper footwear must be worn!".

Images, UC QuakeStudies

Members of the public at Gap Filler's "Film in the Gap!" project. Behind the pair is a chalkboard sign outlining the project's programme for the evening of evening of April 10th, 2011 at Gap Filler's "Film in the Gap!" project. The sign reads, "Gap Filler: 1st - 10th of April. Free live music and films from 5pm onwards. 5pm: Plasticine Heroes, I gave These Guys 5 Bucks, 6pm: The Eastern, 7pm: Film - Candyman. Bring - cushion, chair, blanket, picnic. Coffee from 4:30pm daily. Ex demolition site. Please be safety aware. Proper footwear must be worn!". The sign is stuck to the rear wall of Mitre 10 in Beckenham, facing inwards to the site of the project.

Research papers, The University of Auckland Library

The M7.1 Darfield earthquake shook the town of Christchurch (New Zealand) in the early morning on Saturday 4th September 2010 and caused damage to a number of heritage unreinforced masonry buildings. No fatalities were reported directly linked to the earthquake, but the damage to important heritage buildings was the most extensive to have occurred since the 1931 Hawke‟s Bay earthquake. In general, the nature of damage was consistent with observations previously made on the seismic performance of unreinforced masonry buildings in large earthquakes, with aspects such as toppled chimneys and parapets, failure of gables and poorly secured face-loaded walls, and in-plane damage to masonry frames all being extensively documented. This report on the performance of the unreinforced masonry buildings in the 2010 Darfield earthquake provides details on typical building characteristics, a review of damage statistics obtained by interrogating the building assessment database that was compiled in association with post-earthquake building inspections, and a review of the characteristic failure modes that were observed.