Standard
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AS 1668.4:2024
[Current]The use of ventilation and airconditioning in buildings, Part 4: Natural ventilation of buildings
AS 1668.4:2024 sets out the requirements for the design of natural ventilation systems
Published: 28/06/2024
Pages: 26
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Application — Ventilation system
1.3 Normative references
1.4 Terms and definitions
2 Building attributes and ventilation openings
2.1 Scope of section
2.2 Building attributes
2.3 Openings
2.3.1 General
2.3.2 Type of openings
2.3.3 External openings
2.3.4 Internal openings
3 Ventilation of occupied enclosures
3.1 Scope of section
3.2 Ventilation arrangements
3.2.1 Direct ventilation
3.2.2 Borrowed ventilation
3.2.3 Flowthrough ventilation
3.3 System requirements
3.4 Natural ventilation — simple procedure
3.4.1 Direct ventilation systems
3.4.2 Borrowed ventilation systems
3.5 Natural ventilation — detailed procedure
3.5.1 Direct ventilation systems
3.5.2 Crossflow ventilation systems
4 Ventilation of enclosures used by vehicle with combustion engines
4.1 Scope of section
4.2 Application of section
4.3 Car parks — natural ventilation
4.3.1 General
4.3.2 Natural ventilation openings
4.3.3 Simple procedure
4.3.3.1 Total minimum opening area
4.3.3.2 External obstructions
4.3.3.3 Internal obstructions
4.3.4 Detailed procedure
4.4 Enclosures other than car parks
4.4.1 Enclosed driveways associated with buildings
4.4.2 Loading docks
4.4.3 Queuing areas
4.5 Other occupancies
Appendix A
A.1 Scope
A.2 Suitability
A.3 Design complexity
A.4 Variability
A.5 Advantages and disadvantages
Appendix B
B.1 Scope
B.2 Proposal submission
B.3 Empirical calculations
B.4 Computer modelling
B.5 System design verification
Appendix C
Bibliography
Cited references in this standard
[Current]
The use of ventilation and airconditioning in buildings, Part 2: Mechanical ventilation in buildings
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