Large cracks running down the mud brick chimney of Deans Cottage. The chimney has been supported by wooden bracing.
Cordon fencing around the damaged Woolston Community Library. A section of the brick wall on the side has crumbled.
Large cracks running down the mud brick chimney of Deans Cottage. The chimney has been supported by wooden bracing.
Detail of a building where the brick walls have crumbled, exposing the internal fixtures. Seen through the cordon fence.
Damage to a brick house on Sherbourne Street, where much of the front and side walls have fallen away.
Damage to a brick house on Sherbourne Street, where much of the front and side walls have fallen away.
A construction site where some ground foundation has been laid down. In the background is a damaged brick property.
Detail of a damaged building in Christchurch Central. Bit of broken furniture, fabric and brick rubble can be seen.
Photograph captioned by Fairfax, "Workmen removing bricks on top of the John Burns and Co. building in Lichfield Street".
Photograph captioned by Fairfax, "Workmen removing bricks on top of the John Burns and Co. building in Lichfield Street".
A photograph of a brick from the Union Centre Building. A frog mark can just be seen in it.
Damage to a building on Montreal Street where a part of the brick wall has fallen onto the footpath.
Damage to a building on Montreal Street where a part of the brick wall has fallen onto the footpath.
A cordoned-off section of Victoria Street, where buildings have been damaged and the footpath covered with fallen bricks.
A damaged residential property has been cordoned off with tape. Piles of brick can be seen around the house.
The Parkbridge apartment complex has been taped off. A pile of bricks can be seen inside the property grounds.
Cross cracks in the brick wall of St Elmo Courts apartment block at the Hereford Street / Montreal Street intersection.
Cross cracks in the brick wall of St Elmo Courts apartment block at the Hereford Street / Montreal Street intersection.
Lately I have been doing quite a bit of Job Safety Analysis paperwork (because safety in the workplace is number one priority, folks), and that got me thinking about how the people of early Christchurch might have managed their own … Continue reading →
An UnReinforced clay brick Masonry (URM) chimney is composed of a cantilever URM appendage above a roofline and is considered one of the most earthquake prone non-structural compo¬nents within vintage URM and timber-framed buildings. Observations from past earthquakes including the 1992 Big Bear City earthquake, 1994 Northridge earthquake, 2001 Nisqually earthquake, 2010/2011 Canterbury earthquakes, 2012 Northern Italy earthquakes, and 2014 South Napa earthquake served repeatedly as a reminder of the hazard induced by URM chimneys. The observed failure types included several cases where the adopted retrofit techniques were not adequate to effectively secure chimneys dur¬ing the earthquake. Data collected during the 2010/2011 post-earthquake building assessments in Christchurch and insur¬ance claims are reported herein. Five full-scale solid clay brick URM chimneys which replicated the most encountered geometrical and construction characteristics were subjected to shake table testing. Two chim¬ney samples were representative of the as-built conditions, while three samples were retrofitted using two different configurations of Near-Surface-Mounted (NSM) Carbon-Fibre-Reinforced-Polymer (CFRP) strips and post-tensioning techniques. The adopted securing techniques allowed an increase in seismic acceleration capacity of more than five times for chimneys constructed with ultra-weak mortar and more than twice for chimneys built with weak mortar. http://www.16ibmac.com/
Photograph captioned by BeckerFraserPhotos, "Poplar Lane".
Damaged brickwork of Christ Church Cathedral. The outer layer of stonework has fallen away revealing red bricks on the inside.
Photograph captioned by BeckerFraserPhotos, "195 Armagh Street".
Photograph captioned by BeckerFraserPhotos, "195 - 199 Armagh Street".
Photograph captioned by BeckerFraserPhotos, "195 Armagh Street".
Photograph captioned by BeckerFraserPhotos, "Corner London, Oxford Streets".
A stack of concrete blocks removed from a building.
Photograph captioned by BeckerFraserPhotos, "Hilltop Lane".
Photograph captioned by BeckerFraserPhotos, "Ash Street".
Photograph captioned by BeckerFraserPhotos, "Knox Church".