BRANZ busy in Canterbury
BRANZ engineering staff have been busy on several fronts since the February earthquake, from inspecting residential properties to learning from the damage and advising on changes that may be needed.
Canterbury earthquakes
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Central city recovery
By Susan McLaughlin – 1 October 2011, Build 126, Feature article
The Christchurch City Council has drafted the Central City Plan to guide the redevelopment of Christchurch urban core. The process highlighted the community’s passion to make Christchurch a great city once again – perhaps even better.
Moving to low-damage design
By Stephen Hogg – 1 February 2013, Build 134, Feature article
Is Christchurch about to repeat the same old mistakes? Simple and cost-effective low-damage design could save the city in another disaster.
Opportunity to upgrade
By Lois Easton – 1 February 2013, Build 134, Feature article
Opportunities exist in the rebuild to improve the warmth and energy efficiency of the housing stock. The Build Back Smarter project has shown how this can easily be done alongside earthquake repairs.
Chance to build back smarter
By Lois Easton – 1 December 2013, Build 139, Feature article
The Canterbury earthquakes have created a one-off opportunity to improve the local housing stock. A new service to support housing upgrades during earthquake repair is being rolled out across Canterbury.
The challenge
By Dael Climo – 1 April 2016, Build 153, Feature article
Leading thinkers from science and government have joined forces to start developing ways to manage the risk to our built environment and communities from natural hazards.
Designing houses with unevenly distributed bracing
By Angela Liu, Roger Shelton – 1 April 2021, Build 183
While the bracing requirements in NZS 3604:2011 Timber-framed buildings suit most buildings, the distribution rules of clause 5.4.7 are too lenient for some complex designs. During earthquakes, some Building Code-compliant buildings may move or flex, causing extensive damage. BRANZ research found which buildings are affected and suggests changes.
Unreinforced clay brick masonry buildings
By Dmytro Dizhur, Mike Griffith, Jason Ingham, Lisa Moon – 1 October 2011, Build 126, Feature article
Unreinforced masonry buildings are an important part of New Zealand’s heritage architecture. A survey of the damage to these buildings following the 22 February 2011 earthquake highlighted the importance of seismic retrofitting.
Brick veneer stands the test
By Stuart Thurston – 1 December 2011, Build 127
Twisted wire ties are one reason many brick veneer houses failed in past earthquakes, such as Napier in 1931. However, modern brick veneer houses perform much better, and BRANZ research has identified the critical practices needed for this.
Foundation repairs and new builds
By Graeme Beattie – 1 August 2012, Build 131, Feature article
The residential stream of the Engineering Advisory Group set up after the Christchurch earthquakes has advice on what needs to be done to remediate damaged houses and the types of foundations required in new builds on earthquake-affected land.
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Features (54)
- Intensification and urban planning (Build 187) (1)
- Canterbury today (Build 172) (4)
- Seismic learnings (Build 164) (1)
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- Lessons from Canterbury (Build 134) (12)
- Fire (Build 132) (1)
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- Canterbury earthquakes (Build 126) (18)
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Topics (68)
Issues (68)
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