Strengthening brick gable-ended roofs
Brick gable-ended roofs should be diagonally braced to prevent out-of-plane movement in an earthquake. It could make the difference between a home that remains liveable and one that does not.
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Brick gable-ended roofs should be diagonally braced to prevent out-of-plane movement in an earthquake. It could make the difference between a home that remains liveable and one that does not.
How did residential houses (mainly single-storey and 2-storey houses) perform in the magnitude 7.1 Darfield earthquake on 4 September 2010? Here are some observations from those on the ground in the early days after the major earthquake.
The 6.3 magnitude earthquake that struck Christchurch on 22 February 2011 and the many aftershocks have been an enormous test of the performance of buildings. BRANZ Structural engineers provide some initial thoughts on how houses performed.
BRANZ has done a lot of work on the costs and benefits of mitigating common natural hazards in housing. While some options are cost-effective, others hardly justify the expenditure.
When builders are on site to carry out home renovations or repairs, it is a good time to suggest strengthening the property’s earthquake resistance with actions ranging from removing chimneys to securing the foundations.
House location on a hill or the flat, materials used and when it was built have proven to be among the factors that determined how properties stood up to the Canterbury earthquakes.
Could Christchurch become our first green city? An environmental rating tool developed specifically for the rebuild makes it a possibility.
The sheer scale of the anticipated rebuild in Christchurch will put unprecedented demand on the building supply chain. So far, it looks like it’s up to the challenge.
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.
BRANZ research shows that houses built to the current Building Code and standards generally stood up well to the Canterbury earthquakes. However, more complex specifically designed houses often had issues.