NFPA 13D:2025

Chapter 1 Administration 1.1 Scope. 1.2 Purpose. 1.3 Retroactivity. 6.1 General Provisions. 6.2 Water Supply Sources. 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. Chapter 4 General Requirements 4.1 Sprinkler Temperature Ratings. 4.2 Tube. 4.3 Listed or Labeled. 4.4 Documentation. 4.5 Qualifications. Chapter 5 System Components 5.1 General. 5.2 Aboveground Pipe and Equipment. 5.3 Water Supply Pipe and Fittings. 5.4 Pre-Engineered Systems. Chapter 6 Water Supply 6.1 General Provisions. 6.2 Water Supply Sources. 6.3 Multipurpose Piping System. 6.4 Manufactured Home Water Supply. 6.5 Common Supply Pipes. 11.2 Acceptance Tests. Chapter 12 Inspection, Testing, and Maintenance 7.2 Drains and Test Connections. 7.3 Pressure Gauges. 7.4 Piping Support. 7.5 Sprinklers. 7.6 Alarms. 7.7 Attics. 7.8 Multipurpose and Passive Purge Systems. Chapter 8 Sprinkler Position and Location 8.1 Design Criteria. 8.2 Position of Sprinklers. 8.3 Location of Sprinklers. Chapter 9 Protection from Freezing 9.1 System Types. 9.2 Antifreeze Systems. 9.3 Dry Pipe and Preaction Systems. Chapter 10 Discharge and Hydraulic Calculations 10.1 Design Discharge. 10.2 Number of Design Sprinklers. 10.3 Piping Configurations. 10.4 Pipe Sizing. Chapter 11 System Acceptance 11.1 General. 11.2 Acceptance Tests. Chapter 12 Inspection, Testing, and Maintenance 12.1 General. 12.2 Inspections and Tests. 12.3 Maintenance. Annex C Inspection and Testing at Time of Sale. Annex D Informational References

This standard shall cover the design, installation, and maintenance of automatic sprinkler systems for protection against the fire hazards in one- and two-family dwellings, manufactured homes, and townhouses.