If you're asking me Chris, quite the contrary. It seems that everyone else is saying bracing only applies where performance per ASCE 7 is required, whereas I think the 40/80 tuff applies for everything except in seismic zones where more severe requirements apply.
On Thu, Mar 14, 2013 at 7:03 PM, Cahill, Christopher <[email protected]>wrote: > 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 > [email protected] > www.burnsmcd.com > > Proud to be one of FORTUNE's 100 Best Companies to Work For > *Registered in: MN > > > > > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of Ron Greenman > Sent: Thursday, March 14, 2013 8:57 PM > To: [email protected] > 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 <[email protected]> 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" <[email protected]> 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 > > > [email protected] > > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > > > -- > 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) > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20130314/a75973cc/attachment.html > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > -- 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) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20130314/d49cf496/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
