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Images, UC QuakeStudies

A photograph submitted by Anonymous to the QuakeStories website. The description reads, "Our chimney was capped the day after the September Quake. This little fella served as our chimney for two winters until an expert came along and disconnected our gas fire.".

Images, UC QuakeStudies

A photograph of Pasifika House at the University of Canterbury. The house has a damaged chimney. A sign on the door reads, "The University is on emergency lock down. This includes the fale. Please do not enter.

Images, UC QuakeStudies

A photograph of the alleyway between to buildings in Christchurch. A chimney has fallen off the roof of one of the buildings and landed in the alleyway. One of the screens from the archway above has come with it.

Images, UC QuakeStudies

A photograph of Pasifika House at the University of Canterbury. The house has a damaged chimney. A sign on the door reads, "The University is on emergency lock down. This includes the fale. Please do not enter.

Images, UC QuakeStudies

A photograph of the alleyway between to buildings in Christchurch. A chimney has fallen off the roof of one of the buildings and landed in the alleyway. One of the screens from the archway above has come with it.

Images, UC QuakeStudies

A photograph of Pasifika House at the University of Canterbury. The house has a damaged chimney. A sign on the door reads, "The University is on emergency lock down. This includes the fale. Please do not enter.

Images, eqnz.chch.2010

The kids in this house won't be getting presents from Santa this Christmas; collapsed chimney stack following the magnitude 7.1 earthquake in Christchurch on Saturday 4-9-2010.

Research papers, The University of Auckland Library

An UnReinforced clay brick Masonry (URM) chimney is composed of a cantilever URM appendage above a roofline and is considered one of the most earthquake prone non-structural compo¬nents within vintage URM and timber-framed buildings. Observations from past earthquakes including the 1992 Big Bear City earthquake, 1994 Northridge earthquake, 2001 Nisqually earthquake, 2010/2011 Canterbury earthquakes, 2012 Northern Italy earthquakes, and 2014 South Napa earthquake served repeatedly as a reminder of the hazard induced by URM chimneys. The observed failure types included several cases where the adopted retrofit techniques were not adequate to effectively secure chimneys dur¬ing the earthquake. Data collected during the 2010/2011 post-earthquake building assessments in Christchurch and insur¬ance claims are reported herein. Five full-scale solid clay brick URM chimneys which replicated the most encountered geometrical and construction characteristics were subjected to shake table testing. Two chim¬ney samples were representative of the as-built conditions, while three samples were retrofitted using two different configurations of Near-Surface-Mounted (NSM) Carbon-Fibre-Reinforced-Polymer (CFRP) strips and post-tensioning techniques. The adopted securing techniques allowed an increase in seismic acceleration capacity of more than five times for chimneys constructed with ultra-weak mortar and more than twice for chimneys built with weak mortar. http://www.16ibmac.com/

Images, UC QuakeStudies

A photograph of the earthquake damage to a section of Robin Duff's house at 386 Oxford Terrace. The chimney has fallen off the roof and is now resting in the patio. Behind the chimney, one of the walls has a noticeable lean and the glass of one of the French doors is broken. The photographer comments, "The glass was broken by looters who entered the house and took bits that interested them".