Depends on which version you are using. '16 and '19 only refers to storage needing to be 18" or more, not shelving specifically.
11.3.7.1.2 NFPA 13 - Standard for the Installation of Sprinkler Systems (2022) Shelving, and any storage thereon, directly below the sprinklers shall not extend above a plane located 18 in. (450 mm) below the ceiling sprinkler deflectors. Thomas R. Worley Estimator/Design Manager Fire Foe Corp. 999 Trumbull Ave. Girard, OH 44420 P: 330-759-9834 x112 F: 330-759-8949 E: [email protected]<mailto:[email protected]> [cid:[email protected]]<http://www.firefoe.com/> From: Fpdcdesign <[email protected]> Sent: Wednesday, May 15, 2024 2:11 PM To: Sprinklerforum <[email protected]> Subject: [Sprinklerforum] Obstruction below sidewall sprinkler I am working on a system with extended coverage sidewall sprinklers, allegedly protecting an LH occupancy. The space is a high ceiling area where the elevation distance between the high and low ceilings is 22". The low ceiling is protected by pendants. 4" below the center line of the sidewall sprinklers is a shelf that stick out 6" (4-1/4" from deflector to the edge). It would seem to me that this is an obstruction but it is not addressed in 13. Any thoughts? Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080<tel:860-535-2080> (ofc) 860-554-7054<tel:860-554-7054> (fax) 860-608-4559<tel:860-608-4559> (cell)
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