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NZS 3404 Parts 1 and 2:1997 Steel structures standard

Abbreviation
NZS 3404 Parts 1 and 2:1997
Amendment
Amendments 1, 2 - incorporated.
Valid from
25/06/1997
Replaces
,

Information provider
Standards New Zealand
Author
Standards New Zealand
Information type
New Zealand Standard
Format
PDF


Description

Part 1 sets out minimum requirements for the design, fabrication, erection and modification of steelwork in structures in accordance with the limit state design method or in accordance with the alternative design method.

 

Scope

This Standard sets out minimum requirements for the design, fabrication, erection, and modification of steelwork in structures in accordance with the limit state design method or in accordance with the alternative design method. The Standard sets out the minimum general requirements for the limit state design, fabrication, erection, and modification of safe, serviceable and durable steel structures.

This Standard gives member and structure design requirements for general application of steelwork.

Steel elements less than 3 mm in thickness, unless designed to AS 1163, are excluded from this Standard.

The limit of 450 MPa for the yield stress used in design, except as noted in 1.1.4 (b), stems from a lack of research data on steel grades above this value, meaning that not all the member design provisions presented herein can be currently confirmed as applicable to steels with higher yield stress. The great majority can, however; designers wishing to use steels with fy > 450 should read (1.5) and then use this Standard to the extent recommended therein. Alternatively, use a limit state design provision which covers high strength steel. The clause does not preclude the use of steels having a specified yield stress greater than 450 MPa provided that the yield stress used in design (fy) is limited to 450 MPa. Note, however, that the use of a steel having a specified yield stress greater than 350 MPa is specifically excluded from plastic design by 4.6.2 and the use of grade 450 MPa steel is considerably restricted for use in applications involving earthquake loads by 12.4.

Quenched and tempered steels used as splice cover plates in bolted connections have shown satisfactory behaviour and are permitted to be used in that application, by 1.1.4 (b), with the yield stress in design taken as appropriate to that grade of steel (fy = 690 MPa). Suitably conservative criteria relating to bearing stresses have been applied, due to a lack of experimental data, to substantiate the use of the higher bearing stresses from 9.3.2.4 2 associated with lower strength grades of steel. Hollow section members designed to AS 1163 are most commonly cold-formed, but have traditionally been designed using the 1989 edition of this Standard since they were, for many years, hot-formed. Tests carried out on members manufactured to AS 1163 confirm the applicability of the provisions of this Standard to such members. Similarly, cold-formed hollow members to BS 6363 or JIS G3141, with wall thickness over 3 mm, may be designed in accordance with this Standard.

This Standard is not intended to be used for thin-walled shell or plate structures, since such structures are subject to failure modes not addressed in this Standard. It is, however, considered reasonable to design floor plates using this Standard. (See Introduction to Commentary on section 5.)

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This resource is cited by:

NZS 3404 Parts 1 and 2:1997 Steel structures standard

This document is CITED BY:

NZS 3404 Parts 1 and 2:1997 Steel structures standard

Description

Part 1 sets out minimum requirements for the design, fabrication, erection and modification of steelwork in structures in accordance with the limit state design method or in accordance with the alternative design method.

 

View on Information Provider website Download this resource (PDF, 5.6MB)
NZS 3404 Parts 1 and 2:1997 Steel structures standard
Description

Part 1 sets out minimum requirements for the design, fabrication, erection and modification of steelwork in structures in accordance with the limit state design method or in accordance with the alternative design method.

 

View on Information Provider website Download this resource (PDF, 5.6MB)
This resource cites:

NZS 3404 Parts 1 and 2:1997 Steel structures standard

This document CITES:
New Zealand Standards
Australian Standards
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