Are you thinking sway bracing of mains and large BL's 9.3.5 vs. restraint of BL's 9.3.6? Only applies when seismic is required 9.3.
Chris Cahill, PE* Senior Fire Protection Engineer, Aviation & Facilities Group Burns & McDonnell 8201 Norman Center Drive Bloomington, MN 55437 Phone: 952.656.3652 Fax: 952.229.2923 ccah...@burnsmcd.com www.burnsmcd.com Proud to be one of FORTUNE's 100 Best Companies to Work For *Registered in: MN -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Ron Greenman Sent: Thursday, March 14, 2013 8:57 PM To: sprinklerforum@firesprinkler.org Subject: Re: Seismic and ASCE 7 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 _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
