Bob, you are spot on. However, in this situation, the hydrant would never be used for anything other than testing. And even that is potentially dangerous. The roof slope is about 1-1/2 in 12, There are no parapets or protective railings on the edge. About 60 ft above grade. The roof is a rubber sheet. The only access to the roof is from a central clock tower about 75 ft from the hydrant. You have to climb a wood ladder nailed to the wall to get into the clock tower. Did I mention this is mill construction (wood)?
We are going to give the local AHJ what they want. The contractor installed something without my input and now they have to go back and correct it. I want to be sure I am not missing something before I give my recommendation. Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (tel:860-535-2080) (ofc) 860-554-7054 (tel:860-554-7054) (fax) 860-608-4559 (tel:860-608-4559) (cell) > > On Nov 30, 2022 at 8:30 AM, <Bob Caputo (mailto:[email protected])> > wrote: > > > > > > Todd, > > > > > > > > Regardless of adoption or interpretation of codes and standards, the local > AHJ has to respond to the emergency at hand. The codes and standards provide > the local AHJ with a lot of leeway in terms of what they think they need in > terms of systems, design criteria and the value of a roof hydrant. It is > within their purview to require what they think they want or need. > > > > > > > > We can argue about mini-maxi states or where the limit might be as it relates > to requirements but I’m not sure this isn’t reasonable (depending on the roof > slope) > > > > > > > > We should remember that NFPA standards provide a minimum level of protection > – nothing says we cannot or should not do more. Yes, I know I am preaching > to the choir with this angle but our codes and standards cannot address every > situation specifically and the AHJ probably has a reasonable thought in their > request. > > > > > > > > Just my 2 cents > > > > > > > > > > > > > > > > > > > > > > > > > > > Bob Caputo, CFPS > > > > > > > > President > > > > > > > > American Fire Sprinkler Association > > > > c: 760-908-7753 > > > > > > > > p: > > > > > > 214-349-5965 ext124 > > > > > > > > w: > > > > > > firesprinkler.org (http://firesprinkler.org/) > > > > > > > > > > > > > > > > > > > > > > > > Stronger Together – We help solve problems with you, at any point in your > project timeline! > > > > Are you a member with a technical question? Don't forget one of the > most valuable resources that AFSA provides is Technical Reviews by our > Technical Services Department. It’s like having an FPE on your staff. Visit > www.firesprinkler.org/technicalreview > (https://www.firesprinkler.org/technicalreview) to submit a question today! > (Member login required.) > > > > > > > > > > > > > > > From: Fpdcdesign <[email protected] (mailto:[email protected])> > Sent: Wednesday, November 30, 2022 7:00 AM > To: Discussion list on issues relating to automatic fire sprinklers > <[email protected] > (mailto:[email protected])> > Subject: [Sprinklerforum] Roof Hydrant > > > > > > > > > > > I am working on an existing 4 story building which is being retrofitted with > a Class III standpipe system. We have been told that a ”roof hydrant” is > required. I have not seen anything in 14 (2013 is what this jurisdiction is > using) that specifically mentions a roof hydrant. Section 7.3.2 talks about a > hose valve on the roof, which I assume is a single valve. I couldn’t find > anything that requires any more, although there are a lot of images that show > 2 or 3 outlets. What am I missing? > > > > > > > > > > > Todd G Williams, PE > > > > > Fire Protection Design/Consulting > > > > > > Stonington, CT > > > > > > 860-535-2080 (tel:860-535-2080) (ofc) > > > > > > 860-554-7054 (tel:860-554-7054) (fax) > > > > > > 860-608-4559 (tel:860-608-4559) (cell) > > > > > > _________________________________________________________ SprinklerForum > mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to [email protected] >
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