Doesn't 13 require sway bracing on all systems and seismic bracing, per the prescriptive methods of 13 that meet the performance criteria of ASCE 7 or by engineering calculations per that same criteria, when in a seismic zone that requires seismic bracing. Now that was a mouthful but sway bracing and seismic bracing are very distinct things in my mind. But then I may be misinterpreting.
On Thu, Mar 14, 2013 at 6:42 PM, Chris Born <fireph...@cox.net> wrote: > My opinion is that sprinkler systems are not required to be braced under > ASCE 7 in seismic design category B. ASCE 7 specifically exempts > mechanical and electrical equipment in seismic design category B. I > believe it appropriate to consider a sprinkler system under the same > umbrella as mechanical and electrical systems. > > Mechanical and electrical systems are also exempt from seismic protection > in seismic design category C, unless the importance factor is greater than > 1. Because sprinkler systems have an importance factor of 1.5, they do > require seismic protection in design category C. > > > Christopher Born, P.E. > Director, Fire Protection Engineering > Clark Nexsen > Norfolk, VA > > Sent from my iPad > > On Mar 14, 2013, at 6:03 PM, "Bob" <b...@firebyknight.com> wrote: > > > There is a project that I am not involved in, but the AHJ called for an > > opinion. The situation revolves around the idea that if a building is in > > site class C and design category B, the sway bracing requirements of > NFPA 13 > > are waved by ASCE 7. I have not come across this before, and there is a > > certain fire sprinkler contractor that is eliminating the sway bracing, > > retaining straps, etc... on several large warehouse / distribution > > buildings. The claim is that ASCE 7 allows for this. Has anyone come > > across this and have information verifying or negating it? I am meeting > > with several AHJ's in regard to this tomorrow morning, so any input will > be > > extremely useful. > > > > Thank you, > > > > Bob Knight, CET III > > 208-318-3057 > > www.firebyknight.com > > > > > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > Sprinklerforum@firesprinkler.org > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@firesprinkler.org > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 rgreen...@bates.ctc.edu 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) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20130314/a75973cc/attachment.html> _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum