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Images, UC QuakeStudies

A yellow sticker on the door of a house in Worcester Street reading, "Restricted use. No entry except on essential business. Warning: This building has been damaged and its structural safety is questionable. Earthquake aftershocks present danger. Enter only at own risk. Subsequent events may result in increased damage and danger, changing this assessment. Reinspection may be required. The damage is as described below: partial collapse of longitudinal walls". Following on from this are the specific conditions that must be complied with to enable entry into the property, the inspector's identification details, and the date and time the building was inspected. At the bottom the form reads, "Do not remove this placard. Placed by order of the territorial authority Christchurch City Council".

Images, UC QuakeStudies

Damaged buildings on Colombo Street, seen from the St Asaph Street intersection. The photographer comments, "This photo was taken around May this year. It's actually taken from outside the cordon on St Asaph Street, looking through the wire fence. The buildings are on Colombo Street".

Research papers, The University of Auckland Library

The region in and around Christchurch, encompassing Christchurch city and the Selwyn and Waimakariri districts, contains more than 800 road, rail, and pedestrian bridges. Most of these bridges are reinforced concrete, symmetric, and have small to moderate spans (15–25 m). The 22 February 2011 moment magnitude (Mw) 6.2 Christchurch earthquake induced high levels of localized ground shaking (Bradley and Cubrinovski 2011, page 853 of this issue; Guidotti et al. 2011, page 767 of this issue; Smyrou et al. 2011, page 882 of this issue), with damage to bridges mainly confined to the central and eastern parts of Christchurch. Liquefaction was evident over much of this part of the city, with lateral spreading affecting bridges spanning both the Avon and Heathcote rivers.

Images, UC QuakeStudies

A photograph captioned by BeckerFraserPhotos, "The failed column near the south-east corner of the ground floor of the Hotel Grand Chancellor. This corner of the building slumped 700mm when this column and a nearby sheer wall failed. Scaffolding was erected all around it and then sprayed with concrete to stabilise the building".

Images, UC QuakeStudies

A photograph captioned by BeckerFraserPhotos, "The failed column near the south-east corner of the ground floor of the Hotel Grand Chancellor. This corner of the building slumped 700mm when this column and a nearby sheer wall failed. Scaffolding was erected all around it and then sprayed with concrete to stabilise the building".

Images, UC QuakeStudies

An aerial photograph of the Horseshoe Lake residential area near the Avon River. The photograph has been captioned by BeckerFraserPhotos, "Burwood School is at the top right of this photograph near the intersection of Lake Terrace Road and New Brighton Road. This area is mostly zoned residential green".

Images, UC QuakeStudies

A photograph captioned by BeckerFraserPhotos, "Avonside Girls High School sign". The sign reads, "This site is closed but the school is open. Avonside Girls High School has been temporarily relocated to Burnside High School, 151 Greers Road, Burnside 8053. Please do not enter this site - earthquake-damaged buildings".

Images, UC QuakeStudies

A photograph captioned by BeckerFraserPhotos, "A decorated road sign on the side of Kingsford Street in the Horseshoe Lake district. This entire area is red-zoned and will be demolished in February, so this decorated sign is an acknowledgement of the last Christmas that families will spend in their homes here in Horseshoe Lake".

Images, UC QuakeStudies

A warning sign posted on River Road beside the Avon River reads "Health warning, contaminated water. Due to sewage overflows this water is unsafe for human contact and activity and is a public health risk. Please keep all people and pets out of contact with the water and do not cosume and seafood or shellfish collected from this area." The photographer comments, "A bike ride around the CBD. River Rd subsidence".

Research papers, The University of Auckland Library

This paper presents preliminary field observations on the performance of selected steel structures in Christchurch during the earthquake series of 2010 to 2011. This comprises 6 damaging earthquakes, on 4 September and 26 December 2010, February 22, June 6 and two on June 13, 2011. Most notable of these was the 4 September event, at Ms7.1 and MM7 (MM as observed in the Christchurch CBD) and most intense was the 22 February event at Ms6.3 and MM9-10 within the CBD. Focus is on performance of concentrically braced frames, eccentrically braced frames, moment resisting frames and industrial storage racks. With a few notable exceptions, steel structures performed well during this earthquake series, to the extent that inelastic deformations were less than what would have been expected given the severity of the recorded strong motions. Some hypotheses are formulated to explain this satisfactory performance. http://db.nzsee.org.nz/SpecialIssue/44%284%290297.pdf

Images, UC QuakeStudies

The damaged Knox Church on Bealey Avenue. The brick walls have collapsed, exposing the wooden structure beneath. The photographer comments, "Bealey Avenue is open to traffic, as are many of the side streets, and the damage to buildings along this street is quite impressive and perhaps just a small taste of the damage that lies beyond the cordon ... At the Hagley Park end of Bealey Avenue lies the Knox Church. This church suffered in the first earthquake and featured in the news a fair bit at the time. It's crazy to think that all that appeared to be damaged then were some bricks that had fallen from near the roof. Now, Knox Church is all but a wooden frame holding up a roof. It's eerie to drive past this large church and be able to look straight through it to trees on the other side".

Images, UC QuakeStudies

Furniture spray-painted with drawings and words by members of the public as part of the Words of Hope project. Messages can be seen, such as, "Hope", "Something for everyone", "Equality street", "Food garden", "Opportunity from disaster", "We can do this Chch", "Chch = home", "Love", "Share the land", "Always time for change", "Life is beautiful", and "Sorry folks, this one is too much high rise!".