This makes me pretty leery. If the manual dry standpipe isn’t studiously inspected for open valves or broken pipes then when the FDC is charged you could have a huge inadvertent discharge into the manual system and potentially not be able to provide needed fire flow for the wet standpipes.
I’d say you’d either need two separate FDCs, or if you go with just a single one then the manual dry standpipe would need a control valve that was immediately accessible to the Fire Dept to close off the manual standpipe if the above event occurs. Honestly I’d go with two FDC’s and just make sure you hang really good signage stating what systems they feed. Hope this helps. Eric Rieve Rieve Fire Protection From: Kyle.Montgomery <[email protected]> Sent: Wednesday, April 5, 2023 11:12 AM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]> Subject: [Sprinklerforum] Re: [EXTERNAL] Re: Standpipes & FDC What if there was a check valve separating the wet from the dry, and the FDC was connected to the dry side? -Kyle M From: Craig Hanson <[email protected]<mailto:[email protected]>> Sent: Wednesday, April 5, 2023 7:15 AM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]<mailto:[email protected]>> Subject: [EXTERNAL] [Sprinklerforum] Re: Standpipes & FDC Brian, I agree with Travis. If you have a true dry manual then it is not connected to other systems. If you have a dry automatic then it will have its own dry pipe valve and then could be connected to the FDC through the common manifold. Craig D. Hanson, CFPS Senior Fire Plans Examiner West Coast Code Consultants, Inc. (WC³) Meridian Satellite Office C: 253.225.9977 | E: [email protected]<mailto:[email protected]> | www.WC-3.com<https://urldefense.com/v3/__https:/www.wc-3.com/__;!!Ba8_KKAT!JgEEuYYWcSGA9xERaPxkutYVaGZxzf1A3NGmorhlsRo-33V2-AFsTha0CPwYx2SjZUEdukTfjzsPXF8_pA$> Teaming With Your Community to Make a Difference On Wed, Apr 5, 2023 at 8:12 AM Brian Harris <[email protected]<mailto:[email protected]>> wrote: Travis- Great question. It’s not a job we’re working on so I don’t know the specifics, the question was just brought up in the office. Brian Harris, CET BVS Systems Inc. bvssytemsinc.com<https://urldefense.com/v3/__http:/bvssystemsinc.com/__;!!Ba8_KKAT!JgEEuYYWcSGA9xERaPxkutYVaGZxzf1A3NGmorhlsRo-33V2-AFsTha0CPwYx2SjZUEdukTfjzvi_0m_3A$> From: Travis Mack <[email protected]<mailto:[email protected]>> Sent: Wednesday, April 05, 2023 10:10 AM To: Discussion list on issues relating to automatic fire sprinklers <[email protected]<mailto:[email protected]>> Subject: [Sprinklerforum] Re: Standpipes & FDC Yes they can, provided it is arranged correctly. But how are you having manual and wet standpipes in the same building? Travis Mack, SET M.E.P.CAD | 181 N. Arroyo Grande Blvd. #105 I Henderson, NV 89074 www.mepcad.com<https://urldefense.com/v3/__https:/linkprotect.cudasvc.com/url?a=http*3a*2f*2fwww.mepcad.com*2f&c=E,1,_5vJCgAl4QFHzkIIRkd9oYRYUw-ncaw2oaIpcjXfGNJ47LRTSszKbPVSY3xCtulufqJGZG3nE6qXPE4yrhDZCf0VSbfBO5dWBI2o0-pzhLUCjOSZ5nYxnaYeYBL6&typo=1__;JSUlJQ!!Ba8_KKAT!JgEEuYYWcSGA9xERaPxkutYVaGZxzf1A3NGmorhlsRo-33V2-AFsTha0CPwYx2SjZUEdukTfjzufa4SN0A$> | m: 480.547.9348 AutoSPRINK | AutoSPRINK FAB | AutoSPRINK RVT | AlarmCAD Book appointment time in my calendar https://calendly.com/t_mack_mepcad<https://urldefense.com/v3/__https:/calendly.com/t_mack_mepcad__;!!Ba8_KKAT!JgEEuYYWcSGA9xERaPxkutYVaGZxzf1A3NGmorhlsRo-33V2-AFsTha0CPwYx2SjZUEdukTfjzuL1RPfJA$> From: Brian Harris <[email protected]<mailto:[email protected]>> Sent: Wednesday, April 5, 2023 7:06 AM To: [email protected]<mailto:[email protected]> Subject: [Sprinklerforum] Standpipes & FDC Quick question: A parking garage has (3) standpipes. 2 are wet automatic (conditioned space) & 1 is manual dry. Can they all be fed from one FDC? Brian Harris, CET BVS Systems Inc. bvssystemsinc.com<https://urldefense.com/v3/__https:/linkprotect.cudasvc.com/url?a=http*3a*2f*2fbvssystemsinc.com*2f&c=E,1,v1ImuXOodSkbLZC67sTeOVl5n25H7NmStHDkMra-WquXnTKQq5SGcQODBnzkfkanf-3E_swdaJZ0VcTno0eEVAtJ8mC-Yc0w1ThKRhzkkk3Mog,,&typo=1__;JSUlJQ!!Ba8_KKAT!JgEEuYYWcSGA9xERaPxkutYVaGZxzf1A3NGmorhlsRo-33V2-AFsTha0CPwYx2SjZUEdukTfjzuMtna0lg$> Phone: 704.896.9989 Fax: 704.896.1935 _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org<https://urldefense.com/v3/__https:/lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org__;!!Ba8_KKAT!JgEEuYYWcSGA9xERaPxkutYVaGZxzf1A3NGmorhlsRo-33V2-AFsTha0CPwYx2SjZUEdukTfjzvjUo46mQ$> To unsubscribe send an email to [email protected]<mailto:[email protected]>
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