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
> >
> >
> >
> >
> > _______________________________________________
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>



-- 
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)
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