Steve,
As a firefighter having hose valves on the roof is beneficial. if the roof is large, i.e. where more than 200 ft of handline is required to reach any point on the roof, then additional hose valves are needed. The IBC identifies roof access and standpipe criteria, i.e. "4 stories", "occupied floor >30 feet above lowest FD Vehicle Access. At three stories and below fire department platforms or ladders with waterways can be used to supply water to roof operations, above that it becomes difficult. All "nominally flat" roofs at 4 stories and above need roof access from the inside and hose valves. The tricky part is putting hose valves on the roof where additional stairs don't extend to the roof. At least one stairway should extend completely to roof level and all others be equipped with hatches and ladders to the roof. Doing this would avoid the need to put hose valves on the roof, a real logistics and maintenance hassle, allowing the hose valves already at the top of each stairway to serve two purposes, the floor they serve and the roof above. So in a nutshell the fix is simple, require access to the roof from every stair, one with permanent steps and a penthouse, the others with a hatch and permanent ladder. Hope that helps Sincerely John Drucker Firefighter Fire Protection Subcode Official Red Bank, NJ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Steve Leyton Sent: Sunday, March 29, 2009 5:09 PM To: [email protected] Subject: RE: NFPA 14 roof access We've got ROC in 2-1/2 weeks. I think it may be too late to make a public comment (Yes Roland, I should know this) but if anyone has a question or comment regarding this log, please send to me off-forum and I'll throw it into the discussion. Steve Leyton Protection Design & Consulting San Diego, CA -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Ed Kramer Sent: Saturday, March 28, 2009 8:48 PM To: [email protected] Subject: RE: NFPA 14 roof access I've reread (several times) the proposed change to 7.3.2(5) and I think I now understand the intent. But I'm still confused. The proposed change to A.7.3.2 (also part of 14-53 Log#CP3) adds a sentence that reads "Only one standpipe is necessary to serve the roof, it is not the intent to extend each standpipe to the roof level." OK, let's say we have 3 stairways and 3 standpipes. Stairway 1 has roof access, stairway 2 & 3 don't. Per 7.3.2(5), we install a valve at the highest landing in stairway 1. Per 7.3.2(5), we install a valve above the roof at stairways 2 and 3. So I'm having a hard time understanding how "Only one standpipe is necessary to serve the roof, it is not the intent to extend each standpipe to the roof level" should be interpreted. I don't see anything in 14-53 Log#CP3 that mentions testing. Ed Kramer Littleton, CO > The intent of CP #3 is to clarify the intent that there only needs to be > a single roof connection to facilitate testing. The language remains > regarding a connection at the highest landing of stairs serving roof > access. Many AHJ's will require manifolds at the top of all standpipes > arbitrarily, as they perceive a potential value in suppression > operations. > > Steve > _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) __________ Information from ESET NOD32 Antivirus, version of virus signature database 3971 (20090328) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 3971 (20090328) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
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