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 southern side of the Christ Church Cathedral with boarded up windows and damage to the roof above both of the transepts. Damaged masonry has been piled on the ground in front and one of the spires has been removed and braced with steel in the foreground.
A photograph of a sign, reading, "Extreme care, protected trees." The photograph is captioned by BeckerFraserPhotos, "Provincial Council Chambers".
A photograph captioned by BeckerFraserPhotos, "Earthquake damage to the former post office on the corner of Colombo and Brougham Street in Sydenham".
A photograph captioned by BeckerFraserPhotos, "Earthquake damage to the former post office on the corner of Colombo and Brougham Street in Sydenham".
A photograph captioned by BeckerFraserPhotos, "Earthquake damage to the former post office on the corner of Colombo and Brougham Street in Sydenham".
A photograph captioned by BeckerFraserPhotos, "Earthquake damage to the former post office on the corner of Colombo and Brougham Street in Sydenham".
A photograph captioned by BeckerFraserPhotos, "Earthquake damage to the former post office on the corner of Colombo and Brougham Street in Sydenham".
A photograph captioned by BeckerFraserPhotos, "Earthquake damage to the former post office on the corner of Colombo and Brougham Street in Sydenham".
A crane sits beside the damaged Cranmer Courts building. The stone cladding of a gable end of the building has collapsed, exposing the wooden framework beneath. The photographer comments, "A bike ride around the CBD. Cranmer Courts, Montreal St".
The damaged stone work of the Octagon Live Restaurant on the corner of Manchester and Worcester Streets. A tarpaulin has been used to cover the hole and protect the inside of the building from weather damage.
Damage to the bell tower of St John's Church on Hereford Street. The stones have crumbled, exposing the inside of the tower. They are still lying where they fell. Damage can also be seen on the roof.
A photograph captioned by BeckerFraserPhotos, "The Octagon Live Restaurant (formerly Trinity Congregational Church) on the corner of Worcester and Manchester Streets".
Photograph captioned by BeckerFraserPhotos, "Cathedral Square with the Cathedral in the foreground, the Novotel Hotel behind and BNZ building under deconstruction on the right".
A photograph captioned by BeckerFraserPhotos, "A completed section of retaining wall in Sumner Road, Lyttelton. Note the use of some of the original wall stone as a reminder of what the wall was like for 150 years".
A photograph of a digger demolishing a building. The photograph is captioned by BeckerFraserPhotos, "The old Sydenham post office on the corner of Colombo and Brougham Streets".
Stone walls have collapsed on the Cranmer Courts building, exposing the rooms within. Building jacks hold up the corner of an upper room, preventing its further collapse. The photographer comments, "A bike ride around the CBD. Cranmer Courts, Montreal St".
The Durham Street Methodist Church Roll of Honour, commemorating soldiers who died in World War One. The wall it is set on to is badly cracked and sections of plaster have chipped away revealing the stone work underneath.
The Durham Street Methodist Church Roll of Honour, commemorating soldiers who died in World War One. The wall it is set on to is badly cracked and sections of plaster have chipped away revealing the stone work underneath.
A photograph of the Cranmer Courts on the corner of Kilmore and Montreal Streets. Chimneys and fallen stones have been placed on the ground in front. A hole left by the falling chimney is visible in the roof.
A footpath on Sumner Road in Lyttelton. A low wall made from local volcanic stone has been demolished to the right. The land beyond the footpath has been cordoned off. Below Lyttelton Harbour can be seen, with Mount Evans in the background.
A crane dismantles the top storey of Fuze Restaurant and Cafe, which was formerly the Harbour Board Offices building. It was constructed in 1880 from brick and Quail Island stone. It stands on the corner of Oxford Street and Norwich Quay in Lyttelton.
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".
Photograph captioned by BeckerFraserPhotos, "St John the Baptist in Latimer Square - with a clear view of the church and the hall now that the Arrow building is demolished".
A stone gable wall of one of the buildings of the Beulah Christian Fellowship has partly collapsed, damaging the roof below. The photographer comments, "A bike ride around the CBD. I think this must be part of the Beulah Christian Fellowship. Taken from Edgeware Rd".
A photograph of cracks running through the driveway of a residential property on Glenarm Terrace in Dallington. The cracks have been filled in with stones and planks of wood have been placed over them to allow the residents to continue using the driveway.
Seismic retrofitting of unreinforced masonry buildings using posttensioning has been the topic of many recent experimental research projects. However, the performance of such retrofit designs in actual design level earthquakes has previously been poorly documented. In 1984 two stone masonry buildings within The Arts Centre of Christchurch received posttensioned seismic retrofits, which were subsequently subjected to design level seismic loads during the 2010/2011 Canterbury earthquake sequence. These 26 year old retrofits were part of a global scheme to strengthen and secure the historic building complex and were subject to considerable budgetary constraints. Given the limited resources available at the time of construction and the current degraded state of the steel posttension tendons, the posttensioned retrofits performed well in preventing major damage to the overall structure of the two buildings in the Canterbury earthquakes. When compared to other similar unretrofitted structures within The Arts Centre, it is demonstrated that the posttensioning significantly improved the in-plane and out-of-plane wall strength and the ability to limit residual wall displacements. The history of The Arts Centre buildings and the details of the Canterbury earthquakes is discussed, followed by examination of the performance of the posttension retrofits and the suitability of this technique for future retrofitting of other historic unreinforced masonry buildings. http://www.aees.org.au/downloads/conference-papers/
Seismic retrofitting of unreinforced masonry buildings using posttensioning has been the topic of many recent experimental research projects. However, the performance of such retrofit designs in actual design level earthquakes has previously been poorly documented. In 1984 two stone masonry buildings within The Arts Centre of Christchurch received posttensioned seismic retrofits, which were subsequently subjected to design level seismic loads during the 2010/2011 Canterbury earthquake sequence. These 26 year old retrofits were part of a global scheme to strengthen and secure the historic building complex and were subject to considerable budgetary constraints. Given the limited resources available at the time of construction and the current degraded state of the steel posttension tendons, the posttensioned retrofits performed well in preventing major damage to the overall structure of the two buildings in the Canterbury earthquakes. When compared to other similar unretrofitted structures within The Arts Centre, it is demonstrated that the posttensioning significantly improved the in-plane and out-of-plane wall strength and the ability to limit residual wall displacements. The history of The Arts Centre buildings and the details of the Canterbury earthquakes is discussed, followed by examination of the performance of the posttension retrofits and the suitability of this technique for future retrofitting of other historic unreinforced masonry buildings. http://www.aees.org.au/downloads/conference-papers/2013-2/
A retaining wall on Sumner Road in Lyttelton that is made from local volcanic stone. A section of the wall has collapsed during the 22 February 2011 earthquake, and the bricks cleared away since. A road cone has been placed by the slip to warn drivers.
A photograph captioned by BeckerFraserPhotos, "The Octagon Live Restaurant, formerly the Trinity Congregational Church, with the recent damage to the Rose Window from the 23 December 2011 aftershock".