Retrofitting to resist extreme wind
Strong wind causes damage to houses, particularly their roofs. A recent BRANZ study started by defining ‘extreme winds’ before developing retrofit solutions to ensure roofs on older houses are adequately secured.
Search results for 'wind loads'
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Wind effects on buildings
By Graeme Beattie – 1 June 2010, Build 118
With the help of BRANZ data, the Riskscape joint project between NIWA and GNS aims to better predict the costs of damaging wind events on buildings.
Design prediction of wind-induced building motion
By Ian Wells – 1 April 2009, Build 111
There are sometimes significant discrepancies between the predicted and actual building sway in taller buildings. A new study aims to develop an improved methodology for wind design of buildings.
Understanding loads
By Roger Shelton – 1 October 2014, Build 144
Enquiries to the BRANZ helpline show that the meanings of characteristic strength, capacity, ultimate load and serviceability load are not well understood. We take a look at what the various terms mean.
Beam and truss uplifts
By Roger Shelton – 1 August 2015, Build 149
Roof failures in high winds are unfortunately too common in timber-framed buildings, but get the connections right, and the roof should stay put.
Joining roof trusses
By In Ling Ng – 1 October 2015, Build 150
Most timber trusses are delivered to site as one-piece building components. However, occasionally they are delivered in sections and must be joined on site. Correct installation of these is critical to maintain the designed load paths.
Periphery roof areas
By Roger Shelton – 1 June 2008, Build 106
The area around the edge of a roof requires extra fixings to stop it lifting, but how much of the total roof area needs these extra fixings?
Avoiding risky behaviour
By Dianne Johnson, Peter Lalas, John Sutherland and Karl Jones – 1 December 2014, Build 145, Feature article
A suggested risk matrix for steel and concrete buildings up to 15 storeys could inform decision making in façade component choice and installation for some buildings that fall outside the scope of E2/AS1.
Don’t blow me over
By Trevor Pringle – 1 February 2015, Build 146
While we can’t change New Zealand’s gusty climate, there’s plenty we can do to minimise its impact. Clever siting of buildings, modifying the landscape and providing shelter in the form of fences and plantings help.
Changes to barrier loadings
By Graeme Beattie – 1 August 2008, Build 107
Recent changes to the loading standards will mean changes to the design of barriers.
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Issues (17)
- Build 176 : 1 February 2020 (1)
- Build 162 : 1 October 2017 (1)
- Build 150 : 1 October 2015 (1)
- Build 149 : 1 August 2015 (2)
- Build 146 : 1 February 2015 (1)
- Build 145 : 1 December 2014 (1)
- Build 144 : 1 October 2014 (1)
- Build 141 : 1 April 2014 (1)
- Build 133 : 1 December 2012 (1)
- Build 123 : 1 April 2011 (1)
- Build 118 : 1 June 2010 (1)
- Build 111 : 1 April 2009 (1)
- Build 107 : 1 August 2008 (2)
- Build 106 : 1 June 2008 (1)
- Build 100 : 1 June 2007 (1)
