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AS 4055-2012

[Available Superseded]

Wind loads for housing

Included in NCC Primary References Set
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Specifies site wind speed classifications for determining design wind speeds and wind loads for housing that is within specified geometric limits. Wind speeds are specified for the serviceability and ultimate strength/stability limit states.
Published: 24/12/2012
Pages: 57
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Table of contents
Cited references
Content history
Table of contents
About this publication
1 Scope and general
1.1 Scope
1.2 Limitations
1.3 Normative references
1.4 Definitions
1.5 Notation
2 Wind loads
2.1 Classification
2.2 Relationship to wind region and site conditions
2.3 Selection of terrain category
2.4 Selection of topographic class
2.5 Selection of shielding class
3 Calculation of pressures and forces
3.1 Pressure zones
3.2 Pressure coefficients
3.2.1 Wind classes N1 to N6 (non-cyclonic)
3.2.2 Wind Classes C1 to C4 (cyclonic)
3.2.3 Wind pressures on photovoltaic solar panels
3.3 Calculation of pressures
3.4 Calculation of forces
3.5 Pressures for typical applications
4 Uplift forces
5 Racking forces
5.1 Racking forces
5.2 Area of elevation
Appendix A
A1 Commentary on scope and general
A1.1 General
A1.2 Comment on Clause 1.3—Geometric Limits
A2 Comment on Table 2.1—Wind classification
A3 Derivation of Table 2.2—Wind classification
A3.1 Wind classification
A3.2 Terrain category
A3.3 Topographic class
A3.4 Shielding
A4 Commentary on pressure coefficients (Section 3)
A5 Commentary on pressures for determination of racking forces (Section 5)
A5.1 General, notation and assumptions
A5.1.1 General
A5.1.2 Notation
A5.1.3 Assumptions
A5.2 Equivalent pressures on projected areas
A5.2.1 For flat wall surfaces, gable or skillion roof ends
A5.2.2 For side elevations, single or upper storey, gable- or hip-ended roofs
A5.2.3 Side elevation, lower storey of two storeys or subfloor, gable- or hip-ended roof
A5.2.4 End elevation, single or upper storey, hip-ended roof
A5.2.5 End elevation, lower storey of two storeys, hip-ended roof
A6 Converting wind speeds
Appendix B
B1 General
B2 Houses on an escarpment
B3 Houses on a hill
Appendix C
Appendix D
Cited references in this standard
Structural design actions, Part 2: Wind actions
Content history
DR AS 4055