NFPA 13 Standard for the Installation of Sprinkler Systems
NFPA 13, the Standard for the Installation of Sprinkler Systems, provides current guidance on the design, installation, and testing of automatic sprinkler systems. Its purpose is to ensure these systems operate reliably and effectively in controlling or suppressing fires, thereby safeguarding lives and property.
The 2025 edition introduces several technical revisions, including the inclusion of listed vacuum dry pipe systems in Chapter 8. Chapter 7 now permits the use of vapor phase corrosion inhibitors in the air supply for dry pipe and preaction systems to reduce corrosion.
Updates have been made to rules governing sprinkler placement and the conditions under which sprinklers may be omitted. Chapter 4 has been restructured to separate requirements for miscellaneous storage and low-piled storage into distinct sections. Chapter 9 now allows, in most cases, the exclusion of sprinklers in elevator hoistways.
Chapter 18 has been revised to update load tables by incorporating seismic forces from piping and adjusting seismic coefficient (Cp) values to align with ASCE/SEI 7, Minimum Design Loads and Associated Criteria for Buildings and Other Structures. Additionally, Annex E has been modified to support compliance with ASCE/SEI 7 for installations outside the United States.
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