The 2022 edition of NFPA 13 section A.4.3.2 (16) lists unused attics under examples of light hazard. This also exists in prior editions. That said, the annex material is not the only consideration. The definitions of each hazard classification should be considered when determining protection criteria. For example, where fuel fired equipment is located in an otherwise unprotected attic, sprinkler protection is required to be installed above it….
I hope that helps. *Bob Caputo, CFPS* *President* *American Fire Sprinkler Association* c: 760-908-7753 p: 214-349-5965 ext124 w: firesprinkler.org <https://www.facebook.com/firesprinkler.org/> <https://twitter.com/afsa/status/1039528345367732224> <https://www.linkedin.com/company/american-fire-sprinkler-association-afsa-/> <https://www.instagram.com/firesprinklerorg/> *Get an immediate 2023 tax reduction!* Belonging to AFSA gives you the professional support to expand your knowledge, refine your skills, and connect with like-minded people who rely on AFSA to help make their companies and teams stronger. AFSA member dues are also deductible as an ordinary and necessary business expense! To qualify for 2023, join or renew before December 31 at www.firesprinkler.org/join. *From:* [email protected] <[email protected]> *Sent:* Monday, December 11, 2023 9:08 AM *To:* [email protected] *Subject:* [Sprinklerforum] Definitions I am working on a unheated Attic of 6800 SF wood framing with a Ridge Pole 29’ above the upper floor ceiling structure. The structure was built in 1893. The Building is being renovated which includes new HVAC with air handling equipment to be installed in the Attic. No heating equipment. The attic will not be used for Storage. Will the presence of Air Handling equipment negate the definition of an “unused Attic”? Does the presence of any HVAC equipment put the occupancy into Ordinary Hazard? If there is a definition in NFPA FOR “Unused Attic”, I am unable to find it. Regards, *G. Tim Stone* *G. Tim Stone Consulting, LLC* *NICET Level III Engineering Technician* *Fire Protection Sprinkler Design* *and Consulting Services* * 117 Old Stage Rd. - Essex Jct., VT. 05452* * CELL: (802) 373-0638 * [email protected]
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