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SNZ TS 3404:2018

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Durability requirements for steel structures and components

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This technical specification covers the corrosion protection of structural steelwork in the New Zealand environment. Engineers, architects, contractors, specifiers of corrosion protection systems, the surface coating industry, and the owners of steel assets will find it useful. It provides a means of complying with the performance requirements of New Zealand Building Code clause B2 Durability for steel building elements. This technical specification provides an advanced framework for specifying the durability requirements for steel structures and components in atmospheric and in non-atmospheric environments, and will enable durability requirements to be met without over-specification or under-specification of coating systems. The technical specification updates the information contained in section 5 of NZS 3404.1:2009 and is republished as a stand-alone technical specification. It is a simplification of the design procedure for durability determination given in Heavy Engineering and Research Association Report R4-133:2011 New Zealand Steelwork Corrosion and Coatings Guide, and is intended to be used to ensure that structural steelwork is sufficiently durable to meet the requirements of the NZ Building Code Clause B2, the New Zealand Transport Agency (NZTA) Bridge manual, the NZTA Protective coatings for steel bridges, as well as remain compatible with NZS 3404:1997. The technical specification should be used together with AS/NZS 2312.1:2014 and AS/NZS 2312.2:2014. As the fabrication and erection provisions of NZS 3404 are in the process of being superseded by AS/NZS 5131:2016 and AS/NZS 5100.6:2017, the technical specification is also written to be compatible with those documents.

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SNZ TS 3404:2018

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