Cliff, If they have a blast and they don't have blast relief the building is coming down and who cares about the sprinks? Or perhaps they wan the sprinks to hold the building up? Seriously if they want EQ bracing I'd presume that someone equated a blast with an earthquake and so NFPA 13 2007 - 9.3.7.1 would apply because their intent is addressing the forces inherent in an earthquake. Since C-Clamp restraint is to keep the clamp from "walking" off of what it's attached to and since that can happen in a seismic event then if it's a duck it better quack like a duck. And since with c-clamps it's you do it or you don't (no ground motion analysis and calcs necessary) it applies in all cases. That would be my read if the a priori I had to work with is explosion equals earthquake therefore brace as if an earthquake. My next question is who decided that an explosion equalled an earthquake?
On Wed, Nov 10, 2010 at 3:22 PM, Cliff Whitfield <[email protected]> wrote: > Hi Ron, > > Not sure how to define it. This is a military job and they have decided > that if they get an explosion they want our pipe to move with the building. > The problem is that none of the other disciplines have to do it so all of > their stuff will be beating into our piping. Not to mention they have > apparently not considered the load that will be applied to the structure - > that is not a concern to them - but they are 'hell-bent' on having the FP > braced. > > So hopefully they will never have a blast to deal with and if they do, > hopefully the structure can take the load. > > But that still doesn't put this building in a seismic zone and thus my > question. > > Cliff > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Ron Greenman > Sent: Wednesday, November 10, 2010 5:17 PM > To: [email protected] > Subject: Re: Seismic Question > > Define "blast protection." > > On Wed, Nov 10, 2010 at 2:58 PM, Cliff Whitfield <[email protected]> > wrote: >> I have an unusual situation on a project and would like some opinions. >> >> We are currently doing a project where seismic bracing has been specified >> for 'blast protection' (or something like that). The project is not in a >> zone that would otherwise require seismic protection. So here is my >> question. >> >> Are restraining straps required to be installed on the beam clamps? >> >> Now before you answer, consider this - NFPA 13 2007 - 9.3.7.1 - C-type >> clamps ... used to attach hangers to the building structure IN AREAS > SUBJECT >> TO EARTHQUAKES shall be equipped with a retraining strap. >> >> Ok, now what is your opinion? >> >> Thanks, >> >> Cliff Whitfield, SET >> President >> Fire Design, Inc. >> 850-526-1886 >> >> [email protected] >> www.fire-design.com >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum >> >> For Technical Assistance, send an email to: [email protected] >> >> To Unsubscribe, send an email to:[email protected] >> (Put the word unsubscribe in the subject field) >> > > > > -- > 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: > AFSA, SFPE, ASCET, NFPA, NFSA, AFAA, ASEE, NIBS, WSAFM, WFC > > They are happy men whose natures sort with their vocations. -Francis > Bacon, essayist, philosopher, and statesman (1561-1626) > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > -- 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: AFSA, SFPE, ASCET, NFPA, NFSA, AFAA, ASEE, NIBS, WSAFM, WFC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
