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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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?
Getting the right profile
By Nick Helm – 1 August 2012, Build 131, Feature article
Not only is technology changing building design, it’s changing product development. Build talks to Dave Stampa, National Manager for Steel & Tube Roofing, about the process involved in the development of their latest roofing profile.
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.
Bracing light timber-framed roofs
By Tony Conder – 1 December 2004, Build 85
Roof bracing is one element in a continuum that provides resistance to horizontal loads. It works with the wall and foundation bracing to supply a total bracing package for a building.
Chimney fixing and bracing
By Trevor Pringle – 1 August 2018, Build 167
Most new chimneys are just a chimney shape that encloses the flue, unlike traditional solid chimneys. We look at some of the construction, fixing and bracing requirements for both options.
Bottom plate anchors
By Roger Shelton – 1 February 2008, Build 104
Calls to the BRANZ Helpline indicate that there is still confusion about the correct use of bottom plate anchors with concrete floor slabs.
Full-scale structural testing of school buildings
By David Carradine, Dave Brunsdon, Simon Faulkner, Mark Willard – 1 December 2022, Build 193
Recent work provided valuable insights into the seismic capacity of buildings commonly used in schools nationwide. This provided a unique opportunity to test whole buildings on site to understand their performance and to test the main structural elements in the laboratory.
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Issues (21)
- Build 193 : 1 December 2022 (1)
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