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NFPA 204:2024


The latest, up-to-date edition.

Standard for Smoke and Heat Venting
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Chapter 1 Administration 1.1 Scope. 1.2 Purpose. (Reserved) 1.3 Application. 1.4 Retroactivity. 1.5 Equivalency. 1.6 Units and Formulas. Chapter 2 Referenced Publications 2.1 General. 2.2 NFPA Publications. 2.3 Other Publications. 2.4 References for Extracts in Mandatory Sections. Chapter 3 Definitions 3.1 General. 3.2 NFPA Official Definitions. 3.3 General Definitions. Chapter 4 Fundamentals 4.1 Design Objectives. 4.2 Design Basis. 4.3 Determination of Contents Hazard. 4.4 Venting. 4.5 Smoke Production. 4.6 Vent Flows. Chapter 5 Vents 5.1 Listed Vents. 5.2 Vent Design Constraints. 5.3 Methods of Operation. 5.4 Dimensions and Spacing of Vents. 5.5 Mechanical Smoke Exhaust Systems.Chapter 6 Air Inlets 6.1 General. 6.2 Construction. 6.3 Location. 6.4 Installation. 6.5 Methods of Operation. 6.6 Dimensions and Spacing of Air Inlets. 6.7 Air Paths. Chapter 7 Draft Curtains 7.1 General. 7.2 Construction. 7.3 Location and Depth. 7.4 Spacing. Chapter 8 The Design Fire 8.1 General. 8.2 Steady (Limited-Growth) Fires. 8.3 Growing (Continuous-Growth) Fires. Chapter 9 Sizing Vents 9.1 General. 9.2 Hand Calculations. 9.3 Models. Chapter 10 Mechanical Smoke Exhaust Systems 10.1 General. 10.2 Exhaust Rates. 10.3 Fire Exposure. 10.4 Number of Exhaust Inlets. 10.5 Intake Air. Chapter 11 Venting in Sprinklered Buildings 11.1 Design.11.2 Automatic Sprinkler Systems. 11.3 Storage Occupancies Protected by Control Mode Sprinklers. Chapter 12 Inspection and Maintenance 12.1 General. 12.2 Requirements. 12.3 Inspection, Maintenance, and Acceptance Testing. 12.4 Conduct and Observation of Operational Tests. 12.5 Air Inlets. 12.6 Ice and Snow Removal. Chapter 13 Design Documentation 13.1 Documentation Required. Annex A Explanatory Material Annex B The Theoretical Basis of LAVENT Annex C User Guide for the LAVENT Computer Code Annex D Sample Problem Using Engineering Equations (Hand Calculations) and LAVENT Annex E Predicting the Rate of Heat Release of Fires Annex F Design Information Annex G Informational References

This standard shall apply to the design of venting systems for the emergency venting of products of combustion from fires in buildings.

National Fire Protection Association

NFPA 72:2022 National Fire Alarm and Signaling Code
NFPA 13 : 2022 Standard for the Installation of Sprinkler Systems, 2022 and 2019 Editions

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