Photograph captioned by BeckerFraserPhotos, "The stained glass windows on the north side appear to be intact. ChristChurch Cathedral".
A photograph of the earthquake damage to a stained-glass window of Knox Church on the corner of Bealey Avenue and Victoria Street.
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.
Photograph captioned by BeckerFraserPhotos, "The stained glass window above the altar in St Bartholomew's Anglican Church in Kaiapoi. This is the oldest surviving church in Canterbury".
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Broken and buckled stained glass windows on the Provincial Chambers.
A photograph of the stained-glass window of the Transitional Cathedral.
A photograph of salvaged stained-glass windows from the demolished Warners Hotel.
A photograph of the stained glass skylight in the former City Council Civic Offices building on Manchester Street.
An apartment building on Ferry Road. Staining on the wall and driveway shows how high flooding reached the basement.
Photograph captioned by BeckerFraserPhotos, "Christ Church Cathedral. Detail of south wall with damaged masonry and stained glass window".
A photograph showing parts of the interior ChristChurch Cathedral, including the top of a stained glass window, visible through the damaged west wall.
Detail of damage to the Canterbury Provincial Chambers buildings. Large cracks run up the corner of the building, and the stained glass windows are broken and buckled.
A photograph captioned by BeckerFraserPhotos, "The Old Civic Chamber on Manchester Street. The stained-glass window is still miraculously intact".
Photograph captioned by BeckerFraserPhotos, "Salvaged windows from the historic Warners Hotel, Cathedral Square".
A photograph captioned by BeckerFraserPhotos, "The light shines through these stained glass windows in ChristChurch Cathedral in a way that used to be seen only from the inside of the Cathedral".
A close-up photograph of the damaged tiles and stonework on the roof on the north side of Christ Church Cathedral. The small stained-glass window at the top of the gable has been broken.
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.
The current seismic design practice for reinforced concrete (RC) walls has been drawn into question following the unsatisfactory performance of several RC wall buildings during the Canterbury earthquakes. An overview of current research being undertaken at the University of Auckland into the seismic behaviour of RC walls is presented. The main objectives of this research project are to understand the observed performance of RC walls in Christchurch, quantify the seismic loads on RC walls, and developed improved design procedures for RC walls that will assist in revisions to the New Zealand Concrete Structures Standard. A database summarising the performance of RC wall buildings in the Christchurch CBD was collated to identify damage modes and case-study buildings. A detailed investigation is underway to verify the seismic performance of lightly reinforced concrete walls and initial numerical modeling and small-scale tests are presented in addition to details of planned experimental tests of RC walls. Numerical modelling is being used to understand the potential influence that interactions between walls and other structural elements have on the seismic response of buildings and the loads generated on RC walls. The results from finite element analysis of a severely damaged RC wall in Christchurch highlighted the effect that the floor diaphragms have on the distribution of shear stains in the wall.