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Use of let-in plywood bracing

By David Carradine 1 August 2021, Build 185

Let-in plywood bracing has a long history of use. Some designers and manufacturers specify it, but some councils don’t permit it. BRANZ has found it doesn’t seem to affect structural integrity and suggests ways to resolve the uncertainty.

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Seismic bracing on hillsides

By Angela Liu 1 August 2011, Build 125

Light timber-framed houses on hills and those within the scope of NZS 3604 may share many structural design issues but their seismic bracing performance can be very different. A BRANZ research project looked at the seismic bracing design for houses on hillsides.

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Specific bracing design

By Angela Liu 1 April 2015, Build 147

Changes are needed after houses with a mixture of NZS 3604:2011 wall bracing and specifically designed bracing performed poorly during the Canterbury earthquakes. BRANZ’s new design procedure for seismic bracing elements in new houses will help.

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