National Fire Protection Association Designer's Guide To Automatic Sprinkler Systems Jun 2026

Designers can refer to resources on the basics of fire sprinkler calculations to understand how to select design areas based on occupancy hazards.

A critical but often overlooked aspect of NFPA 13 design is seismic protection. In earthquake-prone regions, the designer must implement specific bracing and flexibility measures. Designers can refer to resources on the basics

It is important to recognize what the Designer’s Guide is not . It is not a code-enforceable document. Jurisdictions adopt NFPA 13, 13R, or 13D; they do not adopt the Guide. Thus, the Guide’s recommendations, interpretive examples, and alternative approaches should never be used as a defense against a mandatory requirement in the standard itself. Additionally, the Guide is periodically updated, but not always simultaneously with the core standards. A designer must always refer to the most current adopted standard for legal compliance. It is important to recognize what the Designer’s