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Images, UC QuakeStudies

A photograph of a badly-damaged shop on Colombo Street. The front wall of the top storey of the building has crumbled into the street, exposing the inside of the building. Steel and wooden bracing is keeping the ceiling up.

Images, UC QuakeStudies

A view across London Street in Lyttelton to the Empire Hotel and the Lyttelton Bakery. The buildings have been cordoned off by a safety fence and the facade of the Empire Hotel has been braced with steel beams.

Images, UC QuakeStudies

The Arts Centre on Worcester Boulevard with damage to the gables. Wire fencing has been placed around the building as a cordon. In the distance, steel bracing has been placed against the front of the building to hold the walls together.

Images, UC QuakeStudies

The Arts Centre on Worcester Boulevard with damage to the gables. Wire fencing has been placed around the building as a cordon. In the distance, steel bracing has been placed against the front of the building to hold the walls together.

Images, UC QuakeStudies

A red-stickered building on Canterbury Street in Lyttelton. The building's facade has been propped up with timber, steel and concrete block bracing, and one of its windows has been weather proofed with plywood. Wire fencing has been place around the building as a cordon.

Images, UC QuakeStudies

A view across London Street in Lyttelton to the Empire Hotel and the Lyttelton Bakery. The buildings have been cordoned off by a safety fence. Sections of the side wall of the Empire Hotel have crumbled and its facade has been braced with steel beams.

Images, UC QuakeStudies

A photograph of the earthquake damage to a building on the corner of Barbadoes and Armagh Streets. The top storey of the building has crumbled, spilling rubble onto the pavement. Steel fences and road cones have been placed around the rubble as a cordon.

Research papers, The University of Auckland Library

Perimeter Moment resisting steel frames (PMRSFs) are a commonly used seismic resisting system, placed around the perimeter of the building for maximum torsional stiffness. They are typically designed as “strong column weak beam” systems with fixed column bases. When subjected to severe earthquake demand, sufficient to push the beams into the inelastic range, it is expected that plastic hinging at the column bases will occur. However, the response of PMRSF systems to the severe 2010/2011 Christchurch earthquake series did not generate column base hinging in systems which exhibited beam yielding.

Images, UC QuakeStudies

The McKenzie and Willis building on High Street with damage to the top storey. The side wall has crumbled, exposing the inside of the building where the roof has been propped up by scaffolding. The front facade of the building is also damaged and is held upright by steel bracing.

Images, UC QuakeStudies

The old Railway Station clock tower on Moorhouse Avenue with plywood and steel reinforcement covering two sides, a crane hanging over top. The brickwork suffered extensive cracking during the earthquake making it in need for reinforcement. The clock has stopped at around 16:35, the time of the earthquake.

Images, UC QuakeStudies

A photograph of the McKenzie & Willis Building on the corner of High and Tuam Streets. The right side of the building has collapsed and steel bracing is being used to hold up the rest. Large piles of rubble and shipping containers can be seen in front.

Images, UC QuakeStudies

A photograph of a detail of the front of Christ Church Cathedral. A stained-glass window remains intact despite the collapsed stonework that surrounds it. The upper part of the front wall has crumbled. Steel bracing has been placed against the wall to limit further damage.