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Images, UC QuakeStudies

A photograph submitted by Jamie Mackay to the QuakeStories website. The description reads, "Containers used to hold up the Cathedral of the Blessed Sacrament, 3 June 2011".

Images, UC QuakeStudies

A photograph submitted by Anonymous to the QuakeStories website. The description reads, "Cathedral of the Blessed Sacrament (29-2-12), Barbadoes Street. What will become of this beautiful icon?".

Images, UC QuakeStudies

The damaged Cathedral of the Blessed Sacrament, seen from Fitzgerald Avenue. The dome has been removed, and cracking is visible in the walls. In the foreground is a damaged workshop, part of the Red Bus depot.

Images, UC QuakeStudies

Damage to the south-west corner of the Cathedral of the Blessed Sacrament. A section of wall has collapsed, exposing the rooms within. Some of the stones have fallen onto a vehicle parked nearby. The photographer comments, "A bike ride around the CBD. Catholic Cathedral, Barbadoes St".

Images, UC QuakeStudies

Damage to the north-west corner of the Cathedral of the Blessed Sacrament. The upper part of the corner structure has collapsed. A statue of the Virgin Mary can be seen in a window. The photographer comments, "A bike ride around the CBD. Catholic Cathedral, Barbadoes St".

Images, UC QuakeStudies

Damage to the dome of the Cathedral of the Blessed Sacrament. Cracking around the base of the dome shows how it has moved. In the foreground, damage to the north-west corner of the building can be seen. The photographer comments, "A bike ride around the CBD. Catholic Cathedral, Barbadoes St".

Images, UC QuakeStudies

A photograph submitted by Raymond Morris to the QuakeStories website. The description reads, "Cathedral of the Blessed Sacrament, Barbadoes Street. The Cathedral was opened in 1905, the architect was Frank Petrie, and was designed in the Italian renaissance style as a basilica. It is not certain yet whether it will be reconstructed after the 2011 earthquakes.".

Images, UC QuakeStudies

Damage to the front of the Cathedral of the Blessed Sacrament. The upper part of the corner structures have collapsed, and the cross on the roof is on a lean. A statue of the Virgin Mary can be seen in a window. The photographer comments, "A bike ride around the CBD. Catholic Cathedral, Barbadoes St".

Research papers, The University of Auckland Library

The Catholic Cathedral of the Blessed Sacrament is a category 1 listed heritage building constructed largely of unreinforced stone masonry, and was significantly damaged in the recent Canterbury earthquakes. The building experienced ground shaking in excess of its capacity leading to block failures and partial collapse of parts of the building, which left the building standing but still posing a significant hazard. In this paper we discuss the approach to securing the building, and the interaction of the structural, heritage and safety demands involved in a dynamic seismic risk environment. We briefly cover the types of failures observed and the behaviour of the structure, and investigate the performance of both strengthened and un-strengthened parts of the building. Seismic strengthening options are investigated at a conceptual level. We draw conclusions as to how the building performed in the earthquakes, comment on the effectiveness of the strengthening and securing work and discuss the potential seismic strengthening methods.