It doesn't. NFPA 13 talks about obstructions over 48" in width but there are also other factors that come into play when dealing with obstructions.
Chapter 8 deals with horizontal and vertical obstruction rules and helps you determine when and where additional sprinklers are required. There are numerous conditions where obstruction rules can come into play. The 36" diameter thing is from FM Global. Craig Prahl | Jacobs | Group Lead - Fire Protection | 864.676.5252 | [email protected]<mailto:[email protected]> | www.jacobs.com<http://www.jacobs.com/> 1041 East Butler Road Greenville, South Carolina 29606 From: Sprinklerforum <[email protected]> On Behalf Of Easter, Tim (Contractor) Sent: Wednesday, June 19, 2019 9:37 AM To: [email protected] Subject: [EXTERNAL] obstruction Hi, Where does it say in NFPA 13 or another code, that you must provide sprinklers under obstructions that are 3' in diameter? Best, Timothy M. Easter ________________________________ NOTICE - This communication may contain confidential and privileged information that is for the sole use of the intended recipient. Any viewing, copying or distribution of, or reliance on this message by unintended recipients is strictly prohibited. If you have received this message in error, please notify us immediately by replying to the message and deleting it from your computer.
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