pendent heads w/ > 100 psi
On Sunday, October 20, 2013 6:44 PM, "[email protected]" <[email protected]> wrote: Isn't the thrust restraint a requirement for systems with pressures in excess of 100 psi? ----- Original Message ----- From: Ron Greenman [mailto:[email protected]] Sent: Sunday, October 20, 2013 09:42 PM To: [email protected] <[email protected]> Subject: Re: NFPA 13 '10 9.3.6 BL Restraint Don't have anything at the moment. Is this eq country? Somewhere there's something that requires up thrust restraint at the end of line. I think lateral is only required for seismic areas, but I'd need to read the section before I made an unequivocal statement. No books in the car. Sent from my iPhone > On Oct 20, 2013, at 2:08 PM, "Cahill, Christopher" <[email protected]> > wrote: > > Got a code section that connects a length of a BL to a restraint or the > inverse of what you said, that if it needs a hanger then it needs restraint? > I got one that says it doesn't, 9.3.6.7 Drops and armovers shall not require > restraint. 3.5.3 Arm-Over. A horizontal pipe that extends from the branch > line to a single sprinkler or a sprinkler above and below a ceiling. I just > find it odd I can have a 2" pipe 100' long serving one head and it doesn't > need anything but regular old gravity hangers. Or I can't find anything to > challenge 9.3.6.7. My case I have a bunch of 3-8' 1" legit armovers. > Contractor didn't install restraint and I think he's right technically. > > Chris Cahill, PE* > Senior Fire Protection Engineer > 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 > rongreenman . > Sent: Sunday, October 20, 2013 2:19 PM > To: [email protected] > Subject: Re: NFPA 13 '10 9.3.6 BL Restraint > > Restraint is to avoid upward thrust and side to side thrust, whipping for > Devo fans, at the end of a branch line. If an armover does not need a hanger > it wouldn't need restraint > > > On Sun, Oct 20, 2013 at 7:50 AM, Cahill, Christopher > <[email protected]>wrote: > >> Two questions. >> >> Is there a length of an armover that needs restraint? Imagine a 12' >> armover that only feeds one head. >> >> Can restraint be connected to something other than structure, like a >> concrete floor above? >> >> Chris Cahill, PE* >> Senior Fire Protection Engineer >> Burns & McDonnell >> 8201 Norman Center Drive >> Bloomington, MN 55437 >> Phone: 952.656.3652 >> Fax: 952.229.2923 >> [email protected]<mailto:[email protected]> >> www.burnsmcd.com<http://www.burnsmcd.com/> >> >> Proud to be one of FORTUNE's 100 Best Companies to Work For >> *Registered in: MN >> >> >> >> >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl >> er.org > > > > -- > 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) > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
