the 13 committee rejected attempts to add a max shadowed area similar to 13R because it was too RESTRICTIVE.
Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org <http://www.firesprinkler.org/> > On Apr 23, 2015, at 10:59 AM, Ben Young <[email protected]> wrote: > > Larry, > > Thanks, I found it in the 2013 ROC, comment 13-143. Its a shame, because > it sounds like they agreed but didn't like the backwall part for some other > reason. McPhee's commentary in 13-135 would have made the appendix > language include areas behind sidewalls, but without something like that, I > have an AHJ basically telling me that this scenario is only allowed in a > 13R installation. My indentations aren't even as severe as those shown, > they're only 12" deep by 5 feet wide! Oh well, I guess have something to > submit next cycle now. > > > Benjamin Young > > On Thu, Apr 23, 2015 at 12:45 PM, Larry Keeping <[email protected]> > wrote: > >> The illustration that was first submitted for their consideration, was >> adjusted by the Technical Committee before it was accepted for addition >> into NFPA 13. The original submission showed a 9 ft wide by 2 ft deep entry >> vestibule on both sides of the corridor. I believe that when the figure was >> revised the "2 ft 0 in. max." should have been edited out. >> >> Larry Keeping >> >> -----Original Message----- >> From: Sprinklerforum [mailto: >> [email protected]] On Behalf Of Ben Young >> Sent: April-23-15 12:01 PM >> To: [email protected] >> Subject: Corridor shadow areas >> >> Does anyone know if there's an error with figure A.8.1.1(3)(a) in the 2013 >> edition of NFPA 13? >> There appears to be an extraneous bit at the bottom that says '2 ft 0in. >> max' >> >> It looks like this is a holdover from a modification made to figure >> 6.4.6.3.3.2 in the 2013 edition of NFPA 13R. >> >> I'm wondering if the bottom of the figure accidentally got chopped off in >> the 13 version of the figure, and that the shadow areas behind the >> sidewalls in a hallway are allowed in a 13 system as well as a 13R system. >> >> I checked the 2016 first and second draft reports but didn't see any >> comments or proposals regarding this, though. >> >> Is this just wishful thinking on my part, or did someone goof up when they >> put the figure in? >> >> Any thoughts? >> >> Benjamin Young >> _______________________________________________ >> 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 >> > _______________________________________________ > 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
