Corrosion

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BRANZ Maps goes mobile

By Greg Overton 1 April 2015, Build 147

BRANZ Maps, a free online geographic information system (GIS) with information on New Zealand addresses, is now even more useful. You can access it from any mobile device to check wind zones and much more.

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Use stainless steel with new timber treatments

By Gareth Kear 1 February 2007, Build 98

Possible health hazards associated with chemicals in CCA preservatives for treated timber have led to revised Codes of use in some countries. New research by BRANZ into the durability of galvanised steel shows work still needs to be done on reducing the corrosivity of preservative-treated timbers.

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Corrosion zones

By Zhengwei Li 1 June 2011, Build 124, Feature article

In the 2011 version of NZS 3604, some changes have been made to the corrosion map, mainly with the atmospheric corrosivity classification system.

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Under the weather

By Stephan Rupp, Zhengwei Li 1 April 2019, Build 171

In response to industry questions, BRANZ recently launched a research project into corrosion rates in vented roof spaces. Two roof spaces have been built in an unforgiving coastal environment and will be monitored.

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Corrosion of fasteners

By Zhengwei Li 1 August 2009, Build 113, Feature article

Although timber treatments protect timber, they can corrode nails, screws and other hardware used in building. A BRANZ research project is investigating the effects of different treatments on some common types of metal fasteners.

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