NFPA 24:2025

Chapter 1 Administration
1.1 Scope.
1.2 Purpose.
1.3 Retroactivity.
1.4 Equivalency.
1.5 Units.
1.6 New Technology.
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.
3.4 Hydrant Definitions.
Chapter 4 General Requirements
4.1 Plans.
4.2 Installation Work.
Chapter 5 Water Supplies
5.1 Connection to Waterworks Systems.
5.2 Size of Fire Mains.
5.3 Pressure-Regulating Devices and Meters.
5.4 Connection from Waterworks Systems.
5.5 Connections to Public Water Systems.
5.6 Pumps.
5.7 Tanks.
5.8 Penstocks, Rivers, Lakes, or Reservoirs.
5.9 Remote Fire Department Connections.
Chapter 6 Water Supply Connections
6.1 Valves.
6.2 Connections to Water Supplies.
6.3 Post Indicator Valves.
6.4 Valves in Pits.
6.5 Backflow Prevention Assemblies.
6.6 Sectional Valves.
6.7 Identifying and Securing Valves.
6.8 Check Valves.
Chapter 7 Hydrants
7.1 General.
7.2 Number and Location.
7.3 Installation.
Chapter 8 Hose Houses and Equipment
8.1 General.
8.2 Location.
8.3 Construction.
8.4 Size and Arrangement.
8.5 Marking.
8.6 General Equipment.
8.7 Domestic Service Use Prohibited.
Chapter 9 Master Streams
9.1 Master Streams.
9.2 Application and Special Situations.
Chapter 10 Underground Requirements
10.1 Piping.
10.2 Fittings.
10.3 Connection of Pipe, Fittings, and Appurtenances.
10.4 Protection of Private Fire Service Mains.
10.5 Grounding and Bonding.
10.6 Restraint.
10.7 Steep Grades.
10.8 Installation Requirements.
10.9 Backfilling.
10.10 Testing and Acceptance.
Chapter 11 Hydraulic Calculations
11.1 Hydraulic Calculation Procedures.
11.2 Calculations in US Customary Units.
11.3 Calculations in SI Units.
Chapter 12 Aboveground Pipe and Fittings
12.1 General.
12.2 Protection of Piping.
Chapter 13 Sizes of Aboveground and Buried Pipe
13.1 Private Service Mains.
13.2 Mains Not Supplying Hydrants.
13.3 Mains Supplying Fire Protection Systems.
Chapter 14 System Inspection, Testing, and Maintenance
14.1 General.
Annex A Explanatory Material
Annex B Valve Supervision Issues
Annex C Recommended Practice for Water Flow Testing
Annex D Recommended Practice for Marking of Hydrants
Annex E Informational References

This standard shall provide the minimum requirements for the installation of private fire service mains and their appurtenances, which include supplying the following: (1) Automatic sprinkler systems (2) Open sprinkler systems (3) Water spray fixed systems (4) Foam systems (5) Private hydrants (6) Monitor nozzles or standpipe systems with reference to water supplies (7) Hose houses.