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Images, UC QuakeStudies

A photograph of the earthquake damage to a house on Bealey Avenue. The outer wall of the house has crumbled, and the bricks have fallen onto the footpath in front. In the background, the bathroom has been exposed, and a window is lying in the bath tub.

Images, UC QuakeStudies

A damaged brick building has wooden bracing holding the walls together. The photographer comments, "This building came through the September Christchurch quake with a few band aid plasters, but the February quake means that she is now DNR (Do Not Resuscitate)".

Images, UC QuakeStudies

A photograph of the earthquake damage to the buildings next to the Canterbury Trade Union Centre on Armagh Street. The front walls of both buildings have collapsed, and bricks spill onto the footpath. Cordon tape and road cones have been placed around the buildings.

Images, UC QuakeStudies

A photograph of the earthquake damage to a building on Armagh Street. The walls of the building have crumbled and the bricks have spilt onto the footpath, exposing the wooden structure beneath. Police tape and road cones have been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of the earthquake damage to the buildings next to the Canterbury Trade Union Centre on Armagh Street. The front walls of both buildings have collapsed, and bricks spill onto the footpath. Cordon tape and road cones have been placed around the buildings.

Images, UC QuakeStudies

A photograph of rubble outside the Cranmer Centre on the corner of Armagh and Montreal Streets. The rubble is from the front walls of the building which have crumbled in places, spilling bricks onto the street. Cordon fencing has been placed around the building.

Research papers, The University of Auckland Library

The connections between walls of unreinforced masonry (URM) buildings and flexible timber diaphragms are critical building components that must perform adequately before desirable earthquake response of URM buildings may be achieved. Field observations made during the initial reconnaissance and the subsequent damage surveys of clay brick URM buildings following the 2010/2011 Canterbury, New Zealand, earthquakes revealed numerous cases where anchor connections joining masonry walls or parapets with roof or floor diaphragms appeared to have failed prematurely. These observations were more frequent for adhesive anchor connections than for through-bolt connections (i.e., anchorages having plates on the exterior facade of the masonry walls). Subsequently, an in-field test program was undertaken in an attempt to evaluate the performance of adhesive anchor connections between unreinforced clay brick URM walls and roof or floor diaphragm. The study consisted of a total of almost 400 anchor tests conducted in eleven existing URM buildings located in Christchurch, Whanganui and Auckland. Specific objectives of the study included the identification of failure modes of adhesive anchors in existing URM walls and the influence of the following variables on anchor load-displacement response: adhesive type, strength of the masonry materials (brick and mortar), anchor embedment depth, anchor rod diameter, overburden level, anchor rod type, quality of installation, and the use of metal mesh sleeves. In addition, the comparative performance of bent anchors (installed at an angle of minimum 22.5° to the perpendicular projection from the wall surface) and anchors positioned horizontally was investigated. Observations on the performance of wall-to-diaphragm connections in the 2010/2011 Canterbury earthquakes, a summary of the performed experimental program and test results, and a proposed pull-out capacity relationship for adhesive anchors installed into multi-leaf clay brick masonry are presented herein. AM - Accepted Manuscript

Images, UC QuakeStudies

Damage to a brick house on Sherbourne Street, where much of the front and side walls have fallen away, partly landing on the property next door.

Images, UC QuakeStudies

A photograph of the earthquake damage to The Volcano Café on London Street. The brick wall on the left side of the building has crumbled, and the bricks have spilt onto the footpath. A red sticker on the door indicates that the building is no longer safe to enter. Plywood has been used to board up the windows and wire fencing has been placed around the building as a cordon.