NFPA 72 code sections · NFPA 72 Overview
Alternatives are allowed if they're proven equivalent
NFPA 72 does not block new technology or a different method. You can propose a system, method, or device that differs from what the code prescribes, provided you give the AHJ technical documentation showing it is equivalent in quality, strength, fire resistance, effectiveness, durability, and safety — and the AHJ approves it. Equivalency is granted case by case; an approval on one job does not transfer to the next.
NFPA 72 reference
Chapter 1 — Administration
1.5 Equivalency (1.5.1 through 1.5.3)
References use NFPA 72 2019/2022 numbering — section numbers can shift between editions, so confirm in the edition your AHJ has adopted.
On the job
A historic theater can't have a strobe on the ornate plaster wall. The designer submits a documented alternative — listed ceiling-mounted strobes with photometric calculations proving equal or better coverage. The AHJ reviews the package and approves it in writing for that project, and the approval letter goes in the Record of Completion.
Quick check
1. An equivalency under NFPA 72 requires:
2. An equivalency approved on one project:
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