Amendment 2 of the Steel Structures Standard NZS 3404:1997 released in October 2007
Amendment 2 of the Steel Structures Standard NZS 3404:1997 released in October 2007 (SNZ, 2007) sets new requirements for steel materials and welding of seismic resisting steelwork that is required to sustain significant plastic deformation under design earthquake events. These changes relate to the selection of steel materials in Table 12.4 and the selection of welding consumables and weld heat input in cl. 2.6.4.5. In some instances these requirements exceed the provisions in the material supply standards for steel sections to AS/NZS 3679 (SAA/SNZ, 1996), plate to AS/NZS 3678 (SAA/SNZ, 1996) and tube to AS1163 (SAA, 1991) A review of steels currently available in the New Zealand market indicates that most will comply with these requirements.
Clark Hyland
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