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Is sprinkler protection required for the overhang shown in the simplified detail below? If sprinkler protection IS NOT required, which allowable sprinkler omission does this comply with in NFPA 13 (2022)? If sprinkler protection IS required, what component(s) are triggering this requirement? Thank you! Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe 
7 Comments
Jesse
4/29/2026 08:07:23 am
what will be beneath the overhang? Anything combustible?
Todd E Wyatt
4/29/2026 08:19:55 am
An automatic sprinkler system (ASPS) is generally required under exterior Projections (e.g. canopies, roofs, balconies, and decks) that are >4-FT in width if the building is equipped with an ASPS.
Rocket
4/29/2026 08:25:32 am
Not required since no combustibles will be stored under the overhang.
Dan Wilder
4/29/2026 08:37:16 am
Need a lot more info to provide a full answer but based on this construction notes and only looking at NFPA, no sprinklers required within. Based on the lower note, no sprinklers required below.
Glenn Berger
4/29/2026 09:08:10 am
The answer depends on what is happening below the overhang. That fact that is greater than 4 feet would imply that sprinklers would be required.
Dave L.
4/29/2026 11:10:51 am
In my opinion, the built-up roof and plywood fascia are the potential spoilers, and it requires a closer step-by-step look at the verbiage in NFPA 13, or consultation with the AHJ. I would argue that the space within meets the concealed space exceptions of Section 9.2.1. However, I have had quandaries where a canopy still does not meet Section 9.2.1.20 "Exterior Soffits, Eaves, Overhangs, and Decorative Frame Elements" where it has to meet its following lines 1 though 5. I often have to remind my designers that the space within and the space below are looked at separately, yet they interact with each other. The NFPALink commentary under Exterior Projections Section 9.2.3.1 states "Sprinklers can be omitted [below] if the canopy construction assembly is composed entirely of noncombustible, limited-combustible, or fire-retardant materials and the area underneath is essentially restricted to pedestrian use." Entirely. If one can't claim it meets the non-combustible, nor limited-combustible definition, then jump to 9.2.3.2 for protection below exterior projections of combustible construction where you must mee ANY of the following (1), (2), or (3). Leave a Reply. |
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