It's 15 feet - but only if you don't have a barrier between areas able to contain the heat from one area into the other. The 18" beam is essentially a lintel between these areas.
----- Original Message ----- From: Ron Greenman <[email protected]> To: [email protected] Cc: Sent: Monday, May 13, 2013 10:33 AM Subject: Re: NFPA 13: 11.1.2 (separation between hazards) I don't think so. If you have two separate hazard classes you'd need to extend the higher into the lower the requisite number of feet (I have 16 in my head but I'm not trusting memory) and to both sides. On Mon, May 13, 2013 at 9:06 AM, Ralphy Henderson <[email protected]>wrote: > (NFPA 13: 11.1.2 - 2013 ed) > > I have a situation where there is a 12 ft. opening leading from one hazard > area to another but the opening has an 18" steel wide flange beam running > along it. I'm wondering if this 18" beam would suffice to adequately > contain the heat in the separate areas since NFPA 13 doesn't elaborate on > the qualifications for such a barrier from what I can tell... > > thx, > > RB > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC, WFSC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) _______________________________________________ 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
