Standard

AS/NZS 4673:2001

[Withdrawn]

Cold-formed stainless steel structures

Sets out requirements for the design of cold-formed stainless steel structural members. Steels for use with this Standard include those specified by a wide range of international Standards. Members may be shaped from annealed or temper-rolled sheet, strip, plate or flat bar.
Published: 09/11/2001
Pages: 126
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Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Referenced documents
1.3 Definitions
1.4 Notation
1.5 Materials
1.5.1 Selection of stainless steel grade
1.5.1.1 Factors to be considered
1.5.1.2 Corrosion resistance
1.5.1.3 Surface finish and appearance
1.5.1.4 Cosmetic applications
1.5.1.5 Maintenance
1.5.2 Stainless steels
1.5.2.1 Applicable stainless steel grades
1.5.2.2 Other stainless steel grades
1.5.2.3 Availability of stainless steel grades and product forms
1.5.2.4 Strength increase resulting from cold-forming (ferritic stainless steels)
1.5.2.5 Effect of welding and heat treatment
1.5.2.6 Ductility
1.5.2.7 Acceptance of steels
1.5.2.8 Delivered minimum thickness
1.5.2.9 Unidentified steel
1.5.3 Design stresses
1.5.4 Fasteners
1.5.4.1 Bolts, nuts and washers
1.5.4.2 Welding consumables
1.6 Design requirements
1.6.1 Loads and load combinations
1.6.2 Structural analysis and design
1.6.2.1 General
1.6.2.2 Ultimate limit state
1.6.2.3 Stability limit state
1.6.2.4 Serviceability limit state
1.6.2.5 Fatigue
1.6.2.6 Fire
1.6.3 Earthquake
1.6.4 Durability
1.7 Non-conforming shapes and construction
2 Elements
2.1 Section properties
2.1.1 General
2.1.2 Design procedures
2.1.2.1 Full section properties
2.1.2.2 Effective section properties
2.1.2.3 Location of reduced width
2.1.2.4 Effective section for determining deflection
2.1.3 Dimensional limits
2.1.3.1 Maximum flange flat-width-to-thickness ratios
2.1.3.2 Flange curling
2.1.3.3 Shear lag effects (usually short spans supporting concentrated loads)
2.1.3.4 Maximum web depth-to-thickness ratio
2.2 Effective widths of stiffened elements
2.2.1 Uniformly compressed stiffened elements
2.2.1.1 General
2.2.1.2 Effective width for capacity calculations
2.2.1.3 Effective width for deflection calculations
2.2.2 Effective widths of webs and stiffened elements with stress gradient
2.2.2.1 Effective widths for capacity calculations
2.2.2.2 Effective width for deflection calculations
2.3 Effective widths of unstiffened elements
2.3.1 Uniformly compressed unstiffened elements
2.3.1.1 General
2.3.1.2 Effective width for capacity calculations
2.3.1.3 Effective width for deflection calculations
2.3.2 Unstiffened elements and edge stiffeners with stress gradient
2.3.2.1 General
2.3.2.2 Effective width for capacity calculations
2.3.2.3 Effective width for deflection calculations
2.4 Effective widths of uniformly compressed elements with an edge stiffener or one intermediate stiffener
2.4.1 Notation
2.4.2 Elements with an intermediate stiffener
2.4.2.1 General
2.4.2.2 Effective width for capacity calculations
2.4.2.3 Effective width for deflection calculations
2.4.3 Elements with an edge stiffener
2.4.3.1 General
2.4.3.2 Effective width for capacity calculations
2.4.3.3 Effective width for deflection calculations
2.5 Effective widths of edge-stiffened elements with one or more intermediate stiffeners, or stiffened elements with more than one intermediate stiffener
2.6 Stiffeners
2.6.1 Transverse stiffeners
2.6.2 Shear stiffeners
2.6.3 Non-conforming stiffeners
3 Members
3.1 General
3.2 Members subject to tension
3.3 Members subject to bending
3.3.1 Bending moment
3.3.2 Nominal section moment capacity
3.3.2.1 General
3.3.2.2 Based on initiation of yielding
3.3.2.3 Based on inelastic reserve capacity
3.3.2.4 Local distortion
3.3.3 Nominal member moment capacity
3.3.4 Shear
3.3.5 Combined bending and shear
3.3.6 Bearing
3.3.7 Combined bending and bearing
3.4 Concentrically loaded compression members
3.4.1 General
3.4.2 Sections not subject to torsional or flexural-torsional buckling
3.4.3 Doubly symmetric or point-symmetric sections subject to torsional buckling
3.4.4 Singly symmetric sections subject to flexural-torsional buckling
3.4.5 Non-symmetric sections
3.5 Combined axial compressive load and bending
3.6 Tubular members
3.6.1 General
3.6.2 Bending
3.6.3 Compression
3.6.4 Combined compression and bending
3.6.5 Shear
3.6.6 Combined shear and bending
3.6.7 Welded connections
4 Structural assemblies
4.1 Built-up sections
4.1.1 Sections composed of two channels
4.1.2 Spacing of connections in compression elements
4.2 Mixed systems
4.3 Lateral restraints
4.3.1 General
4.3.2 Symmetrical beams and columns
4.3.3 Channel and Z-section beams
4.3.3.1 General
4.3.3.2 Bracing when one flange is connected
4.3.3.3 Neither flange connected to sheeting
4.3.3.4 Laterally unbraced box beams
5 Connections
5.1 General
5.2 Welded connections
5.2.1 General
5.2.2 Butt welds
5.2.2.1 General
5.2.2.2 Tension or compression
5.2.2.3 Shear
5.2.3 Fillet welds
5.2.3.1 General
5.2.3.2 Longitudinal loading
5.2.3.3 Transverse loading
5.2.4 Resistance spot welds
5.2.4.1 General
5.2.4.2 Shear
5.2.4.3 Tension
5.2.5 Tubular connections
5.3 Bolted connections
5.3.1 General
5.3.2 Holes
5.3.3 Spacing and edge distance
5.3.4 Tear out capacity of the connected part
5.3.5 Net section tensile capacity of the connected part
5.3.6 Bearing capacity of the connected part
5.3.7 Stainless steel bolts to ASTM Standards
5.3.7.1 General
5.3.7.2 Bolts in shear
5.3.7.3 Bolts in tension
5.3.7.4 Bolts in combined shear and tension
5.3.8 Stainless steel bolts to ISO 3506
5.3.8.1 General
5.3.8.2 Bolts in shear
5.3.8.3 Bolts in tension
5.3.8.4 Bolts in combined shear and tension
6 Testing
6.1 Testing for determining material properties
6.1.1 Design based on measured values of yield stress
6.1.2 Testing of unformed steel
6.1.3 Compression testing
6.1.4 Testing of full sections
6.1.5 Testing of flat coupons of formed members
6.1.5.1 Assessment of strength increase
6.1.5.2 Design properties
6.2 Testing for assessment or verification
6.2.1 General
6.2.2 Static tests for strength or serviceability
6.2.2.1 Test specimens
6.2.2.2 Test loads
6.2.2.3 Coefficient of variation of structural characteristics
6.2.2.4 Test requirements
6.2.2.5 Criteria for acceptance
6.2.2.6 Test report
6.2.2.7 Design capacity of specific products and assemblies
Appendix A
Appendix B
B1 Mechanical properties of stainless steels
B2 Mechanical properties of welds
Appendix C
C1 Introduction
C2 Stainless steel grades
C2.1 Introduction
C2.2 Classification of stainless steels by microstructures
C2.3 Effect of product form
C3 Effect of alloying elements in stainless steels
C4 Surface finish
C5 Mechanical behaviour and design value of properties
C5.1 Basic stress-strain behaviour
C5.1.1 Non-linearity
C5.1.2 Non-symmetry of tensile and compressive behaviour
C5.1.3 Anisotropy
C5.2 Factors affecting stress-strain behaviour
C6 Physical properties
C7 Durability—Corrosion
C7.1 Introduction
C7.2 Mechanism of corrosion resistance
C7.3 Types of corrosion and performance of steel grades
C7.3.1 General (uniform) corrosion
C7.3.2 Abrasion corrosion
C7.3.3 Pitting corrosion
C7.3.4 Crevice corrosion
C7.3.5 Intergranular corrosion (sensitization)
C7.3.6 Galvanic corrosion
C7.3.7 Stress corrosion cracking
C7.3.8 Effect of welding on corrosion resistance
C7.4 Corrosion in selected environments
C7.4.1 Air
C7.4.2 Sea water
C7.4.3 Other waters
C7.4.4 Chemical environments
C7.5 Design for corrosion control
C8 Grade selection
C8.1 Introduction
C8.2 Grade selection
C8.2.1 Ferritic grade 409
C8.2.2 Ferritic grade EN 10088 1.4003
C8.2.3 Ferritic grade 430
C8.2.4 Austenitic grade 304
C8.2.5 Austenitic grade 316
C8.2.6 Austenitic grade 301
C8.2.7 Martensitic grade 420C
C8.2.8 Duplex grade S31803
C9 References
Appendix D
D1 Introduction
D2 Identifying stainless steel fasteners
D2.1 General
D2.2 Identifying stainless steel fasteners to ISO 3506
Appendix E
E1 General
E2 Load-carrying capacity [strength]
E3 Deflections
E4 Limitations
Appendix F
F1 General
F2 Weld fatigue
F3 Fatigue design in accordance with Euro Inox
F4 Fatigue design in accordance with Eurocode 3
F5 Fatigue in accordance with AS 4100 with application to stainless steel
F6 References
Appendix G
G1 General
G2 Properties of stainless steels
G3 Other Standards
G4 Post-fire performance
Appendix H
H1 Shear centre distance (m), torsion constant (J) and warping constant (Iw)
H2 Monosymmetry section constants
Appendix I
Appendix J
J1 General
J2 Definitions
J3 Field of application
J4 Analysis
J5 Welds
J6 Welded joints between circular hollow sections
J7 Welded joints between hollow section brace members and square/rectangular hollow section chords
J7.1 General
J7.2 Square or circular brace members and square chords
J7.3 Rectangular sections
J8 Welded joints between hollow section brace members and I-section chords
Appendix K
Cited references in this standard
Content history
DR 00011