NFPA 204: Standard for Smoke and Heat Venting

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Apply the 2015 NFPA 204 correctly for smoke and heat venting systems that prevent build up of combustion products.

Essential for engineers developing fire protection schemes and for enforcers charged with plans approval, the 2015 NFPA 204: Standard for Smoke and Heat Venting applies to the design of venting systems for the emergency venting of products of combustion from fires in buildings. Manual and computer-modeled solution methods aid in design calculations. The equations or models provide the designer with the necessary tools to develop vent designs based on selected performance objectives related to a specific building and a specific set of circumstances.

Changes in the 2015 edition address:

  • Revised requirements for draft curtain materials, so designers and enforcers can make informed decisions about their acceptability based on the types of hazard. Engineers and architects need this critical Standard to improve fire protection in buildings where smoke and heat venting is used. Facility managers and inspectors also rely on NFPA 204 to ensure systems are maintained so they can function as designed. (Softbound, 86 pp., 2015)

NFPA® 204 Standard for Smoke and Heat Venting, 2015 Edition

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