I hope this isn’t digressing too much. A moderate amount of sprinkler designers don’t dive too deep into building or fire code away from spk’s, and maybe alarms.
Mall hose connections. Malls were often built on the edge of town. This is another way of saying often built where fire response capabilities were spread thin. Covered Malls (defined term) over 50k sf. require a Smoke Exhaust system. Design criteria is to keep smoke above a person’s head. Emergency generators, the whole shebang. Unlike many areas away from stairs FF’s should be able to find them in a fire. These should not solely be viewed as mop up lines. They are extinguishment attack lines in conjunction with operating sprinklers. FF’s are going to use their own hose, commonly 1-3/4” or 2”, coupled 1-1/2” NST. It takes a lot of labor to extend hose into a large building. Just what you don’t have on the edge of town out by the freeway interchange. See above. Best. Bruce Verhei > On 10/02/2020 4:07 PM Kyle.Montgomery via Sprinklerforum > <sprinklerforum@lists.firesprinkler.org> wrote: > > > OK, so it's the IBC that specifies when/where a hose connection of that type > can be supplied by the sprinklers system. I'm seeing it now. > > Thanks, Steve and others. > > -Kyle M > > -----Original Message----- > From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On > Behalf Of Steve Leyton via Sprinklerforum > Sent: Friday, October 2, 2020 12:40 PM > To: sprinklerforum@lists.firesprinkler.org > Cc: Steve Leyton <st...@protectiondesign.com>; Michael Hill > <mi...@phoenixfp.net> > Subject: [EXTERNAL] RE: 8.17.5 Hose Connections > > Hoses for fire department use are described as 2½" in 8.17.5.2, so never mind > 1½" for purposes of this discussion. Three conditions come to mind where > Fire Department hose valves (you notice I didn't say Class I standpipe > connections, because these are not exclusively considered standpipes) might > be required and are specifically allowed to be supplied by the sprinkler > system: > > 1. Stages over 1,000 sq. ft. in area > 2. Exit passageways > 3. Covered mall buildings, at locations specified in the Building Code > > In these cases, an inside hose stream allowance must be taken at the point > where combined main piping supplies the most demanding hose connection. > Many AHJ agencies (at least the ones that are on the ball) require a > calculation from the FDC to prove the required flow rate and may have > ordinances or policies that specify the flow rate. > > The foregoing is my opinion only and does not represent NFPA or the NFPA 14 > Technical Committee, nor intended to serve as an interpretation of the > standard. > > Steve Leyton > Protection Design & Consulting > San Diego, CA > > > > > > -----Original Message----- > From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] > On Behalf Of Michael Hill via Sprinklerforum > Sent: Friday, October 02, 2020 12:24 PM > To: sprinklerforum@lists.firesprinkler.org > Cc: Michael Hill <mi...@phoenixfp.net> > Subject: RE: 8.17.5 Hose Connections > > Would small hoses at a stage qualify? > > Mike Hill > > -----Original Message----- > From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On > Behalf Of Kyle.Montgomery via Sprinklerforum > Sent: Friday, October 2, 2020 3:16 PM > To: 'sprinklerforum@lists.firesprinkler.org' > <sprinklerforum@lists.firesprinkler.org> > Cc: Kyle.Montgomery <kmontgom...@aerofire.com> > Subject: 8.17.5 Hose Connections > > So, I understand the "Small [1 ½ in. ] Hose Connections" that are discussed > in 8.17.5.1. You typically find these in rack storage warehouses. > > But I'm confused by 8.17.5.2 Hose Connections for Fire Department Use. What > hose connections would these be? Or, perhaps I should ask when these hose > connections would be required. The description and the associated figures > looks like it is referring to the hose valves you would find as part of a > combined sprinkler/standpipe system. But the commentary in the handbook says > specifically "These connections are not to be treated as standpipe hose > connections". > > -Kyle M > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.firesprinkler.org_listinfo.cgi_sprinklerforum-2Dfiresprinkler.org&d=DwIFAw&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=FCOUHvoXPhMGrVpPveiBJz02lmkxa-2XqVTPsUdJvbc&s=iQjlnqCG5EoxMn61VyCBP-Kt6WvU6DzRGXVaxHyf0vY&e= > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.firesprinkler.org_listinfo.cgi_sprinklerforum-2Dfiresprinkler.org&d=DwIFAw&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=FCOUHvoXPhMGrVpPveiBJz02lmkxa-2XqVTPsUdJvbc&s=iQjlnqCG5EoxMn61VyCBP-Kt6WvU6DzRGXVaxHyf0vY&e= > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > https://urldefense.proofpoint.com/v2/url?u=http-3A__lists.firesprinkler.org_listinfo.cgi_sprinklerforum-2Dfiresprinkler.org&d=DwIFAw&c=wn3mZQLIuInh2ClcJ0_DIA&r=Z_2A85VL7AQzoqudh6uOyS3bn8etxB7nLN8OBJwQd9A&m=FCOUHvoXPhMGrVpPveiBJz02lmkxa-2XqVTPsUdJvbc&s=iQjlnqCG5EoxMn61VyCBP-Kt6WvU6DzRGXVaxHyf0vY&e= > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@lists.firesprinkler.org > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
