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Images, eqnz.chch.2010

Parapet and roof of this building collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Crack in the parapet of this building, resulting from the magnitude 7,1 earthquake that struck Christchurch on 4 September 2010.

Images, eqnz.chch.2010

Parapet and roof of this building collapsed during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Shop parapet toppled in the magnitude 7 earthquake in Christchurch on Saturday 4-9-2010. This building was condemned and demolished on 9 September 2010.

Images, eqnz.chch.2010

Another shop verandah taken down by falling parapet during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Shop parapet toppled in the magnitude 7 earthquake in Christchurch on Saturday 4-9-2010. This building was condemned and demolished on 9 September 2010.

Images, eqnz.chch.2010

Another shop verandah taken down by falling parapet during the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Front parapet of this building toppled onto Moorhouse Ave; aftermath of a magnitude 7.1 earthquake that struck Christchurch on 4 September 2010.

Images, eqnz.chch.2010

Car damaged by the collapse of the building parapet following the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Images, eqnz.chch.2010

Part of the parapet of this building was shaken loose by the magnitude 7.1 earthquake that hit Christchurch on 4 September 2010.

Images, eqnz.chch.2010

Part of the parapet of this building was shaken loose by the magnitude 7.1 earthquake that hit Christchurch on 4 September 2010.

Research papers, The University of Auckland Library

Unrestrained unreinforced clay brick masonry (URM) parapets are found atop a large number of vintage URM buildings. Parapets are typically non-structural cantilevered wall elements that form a fire barrier and in most cases form decorative and ornamental features of vintage URM buildings. Parapets are considered to be one of the most vulnerable elements that are prone to out-of-plane collapse when subjected to earthquake induced shaking. An in-depth analysis of the damage database collected following the 2010/2011 Canterbury earthquakes was performed to obtain information about the distribution, characteristics and observed performance of both the as-built and retrofitted parapets in the Christchurch region. Results, statistical interpretation and implications are presented herein. http://www.aees.org.au/downloads/conference-papers/2015-2/

Images, eqnz.chch.2010

The magnitude 7.1 earthquake that struck Christchurch on 4 September 2010 caused the parapet to topple, taking with it the verandah of this cafe where I had a few coffees.

Images, eqnz.chch.2010

The magnitude 7.1 earthquake that struck Christchurch on 4 September 2010 caused the parapet to topple, taking with it the verandah of this cafe where I had a few coffees.

Images, eqnz.chch.2010

Cracks in the parapet of this beautiful Madras Street building that I walk past to / from work everyday; aftermath of the magnitude 7.1 earthquake that hit Christchurch on Saturday 4 September 2010.

Images, eqnz.chch.2010

Cracks in the parapet of this beautiful Madras Street building that I walk past to / from work everyday; aftermath of the magnitude 7.1 earthquake that hit Christchurch on Saturday 4 September 2010.

Images, eqnz.chch.2010

Part of the parapet fell off from this Burger King outlet on Bealey Ave during the magnitude 7.1 earthquake that struck Christchurch on Saturday 4 September 2010.

Images, UC QuakeStudies

A photograph of the Durham Street Methodist Church. The parapet at the tip of the front gable has come loose and is leaning towards the road. Wire fencing has been placed around the building as a cordon.