I see a paradox when thought about together, from a modeling standpoint-- if I want to make a head activate faster I can; 1) make the fire bigger, 2) move the head closer to the fire (lower the ceiling), or 3) put the head closer to other heads (reduce the spacing). Since OH fires are hotter than LH fires the head activation takes longer for LH, so I should space LH heads closer together and OH heads could be spaced farther apart, but this is backwards as far as coverage in terms of density goes!
-----Original Message----- From: rongreenman . [mailto:[email protected]] Sent: Wednesday, October 02, 2013 9:52 AM To: [email protected] Subject: Spacing Rules I'd like to start a general conversation, no particular question, about which spacing rules people seem to think are based on heat collection, coverage, and/or both. I have a feeling that a lot of rules we attribute to coverage, and then try massage into inductive logic argument, really have more to do with meeting listing criteria for detection. -- 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
