John, you can’t mix them. So is it the bulb size I can’t mix or the listing in the application? What if it’s a fast response link in a typically QR sprinkler that is listed SR in this application? I think your reasoning and Nick’s and mine all have merit, but I think we’re trying to parse out what this all means in 13. I’m just reading the rules without concern for which is best in an actual situation because then you gave to ask which works first and then if more than one goes which is best. I don’t think the code can tell us that.
On Thu, Feb 15, 2018 at 3:28 PM John Denhardt <[email protected]> wrote: > My 3 cents. I would us the QR. The other sprinklers are QR but in this > application, they only receive the SR. > > QR provides better protection in my opinion. > > John > > John August Denhardt, P.E. > Strickland Fire Protection > > On Feb 15, 2018, at 5:28 PM, Ed Kramer <[email protected]> wrote: > > Reference section 8.3.3.2 of the 2013 edition of NFPA 13: “Where QR > sprinklers are installed, all sprinklers within a compartment shall be > quick-response unless otherwise permitted in 8.3.3.3.” Section 8.3.3.3 > isn’t applicable for this question. > > > > I’m protecting an OH II sales area with EC sprinklers spaced (mostly) at > 18’x18’. This particular sprinkler is listed as SR at that spacing, but is > listed as QR for 14’x14’ and smaller spacing. This sales area has a small > 20 sf nook (not a separate compartment) that requires an additional > sprinkler. My intent is to protect that nook with a K5.6 sprinkler. > > > > Should the K5.6 sprinkler be SR or QR? > > > > The answer is probably SR since the EC sprinklers are installed at a > spacing that has a SR listing. But that would be mixing a > standard-response element with a fast-response element – something I’ve > been led to believe is not cool. > > > > The 2016 flavor of NFPA 13 has a new section 8.3.3.5 that allows mixing a > SR listing with a QR listing as long as it’s the same sprinkler (and > therefor both have the same fast-response element). > > > > Anybody want to give their 2 cents? > > > > *Ed Kramer* > > Bamford Fire Sprinkler Co., Inc. > > 5134 Merriam Dr./Shawnee Mission, KS 66203 > > Phone: 913-432-6688 Fax: 913-432-5294 Cell: 785-766-4894 > > [email protected] > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > -- Sent from Gmail Mobile
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