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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

A photograph submitted by Sarndra to the QuakeStories website. The description reads, "Through the car window – damaged Lyttelton road tunnel control building. April 2011.".

Research papers, The University of Auckland Library

The Christchurch region of New Zealand experienced a series of major earthquakes and aftershocks between September 2010 and June 2011 which caused severe damage to the city’s infrastructure. The performance of tilt-up precast concrete buildings was investigated and initial observations are presented here. In general, tilt-up buildings performed well during all three major earthquakes, with mostly only minor, repairable damage occurring. For the in-plane loading direction, both loadbearing and cladding panels behaved exceptionally well, with no significant damage or failure observed in panels and their connections. A limited number of connection failures occurred due to large out-of-plane panel inertia forces. In several buildings, the connections between the panel and the internal structural frame appeared to be the weakest link, lacking in both strength and ductility. This weakness in the out-of-plane load path should be prevented in future designs.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Bob Brown's Hi-Fi Sounds building on the corner of Gloucester and Armagh Streets. Many of the windows have broken and wire fencing has been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of the earthquake damage to the Bob Brown's Hi-Fi Sounds building on the corner of Gloucester and Armagh Streets. Many of the windows have broken and wire fencing has been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of a badly-damaged building on the corner of Manchester Street and Gloucester Street. The wall of the top storey has crumbled, and the bricks have fallen onto the footpath below. Wire fencing has been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of a badly-damaged building on the corner of Manchester Street and Gloucester Street. The wall of the top storey has crumbled, and the bricks have fallen onto the footpath below. Wire fencing has been placed around the building as a cordon.

Images, UC QuakeStudies

A photograph of a digger and workers in high-visibility gear outside a badly-damaged building on the corner of Gloucester Street and Manchester Street. The road is covered in building rubble and has been cordoned off with wire fencing.

Images, UC QuakeStudies

A photograph of a digger and workers in high-visibility gear outside a badly-damaged building on the corner of Gloucester Street and Manchester Street. The road is covered in building rubble and has been cordoned off with wire fencing.