If you have a combination standpipe, you may need to be cognizant of exceeding system component rating. 2019 edition of NFPA 14 has an added requirement:
7.8.1.2.1 The pressure required at the fire department connection for manual standpipes shall not exceed the working pressure of the system components of the standpipe system or sprinkler system when the system is a combined system. Travis Mack, SET M.E.P.CAD | Instructor / Support 181 N. Arroyo Grande Blvd. #105 I Henderson, NV 89074 www.mepcad.com<http://www.mepcad.com/> | m: 480.547.9348| Whatspp: +14805479348 Email: [email protected] AutoSPRINK | AutoSPRINK FAB | AutoSPRINK RVT | AlarmCAD From: Kevin Hall <[email protected]> Sent: Friday, February 9, 2024 10:15 AM To: George Medina Jr. <[email protected]>; Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [Sprinklerforum] Re: STANDPIPE PSI SIGNAGE 178 [https://www.dropbox.com/s/g4h8r7hdtsr6154/AFSA_L.png?raw=1] Kevin Hall, M.Eng., P.E., ET, CWBSP, PMSFPE Sr. Manager, Engineering and Technical Services American Fire Sprinkler Association p: 214-349-5971 w: firesprinkler.org<http://firesprinkler.org/> Treat Your Apprentices Like VIPs! AFSA’s Virtual Instruction Program (VIP) for Apprentices is training that comes straight from our expert instructors. They lead the way to ensure your men and women are trained, letting you focus on OJT. Click here<https://www.firesprinkler.org/sprinkler-apprentice-training/> to learn more and enroll. On Fri, Feb 9, 2024 at 12:14 PM George Medina Jr. <[email protected]<mailto:[email protected]>> wrote: If the required pressure at the FDC is 178 psi and the City pressure is 84 psi, do I subtract the 84 psi from the 178? or do I just put the 178 psi on sign? George Medina Jr. Sr. Fire Sprinkler Designer SINGLETON FIRE PROTECTION INC. _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org To unsubscribe send an email to [email protected]<mailto:[email protected]>
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