Another thought that you triggered with the term "free standing": FDC's can be composed of single clapper and multi-clapper Siamese bodies, or built out of manifolds with separate snoots for each inlet, including snoots with spring checks built into them. So the configuration of the inlet connection itself should be taken into account when considering whether a separate swing check is (also) necessary. If you have an DSP inlet with check snoots, I would say that satisfies the intent of the standard.
The foregoing is my opinion only and does not necessarily represent the opinion or intent of the NFPA 14 Technical Committee on Standpipe and Hose Systems. Steve -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Greg McGahan Sent: Thursday, May 02, 2013 7:14 AM To: [email protected] Subject: Re: check valves on dry standpipes In this case, the local FD would be familiar with the SP - it is also visible and free standing. I know we did one other similar dock without the check valve in the same county. Thanks, Greg On Thu, May 2, 2013 at 8:46 AM, George Church <[email protected]> wrote: > Bet the FF get soaked since they expect that check is in place like > every other fdc they've seen. > > I did a manual dry in mid80s buried in interior pilasters, protected > by heat, and put supervisory water in it for supervision, so needed the check. > > Glc > > Sent from my iPhone > > On May 2, 2013, at 8:59 AM, "Cahill, Christopher" > <[email protected]> > wrote: > > > While back feeding is true they wouldn't take the hose off until > > they > bled down the hose. Each connection off a fire truck has a bleed valve. > With no check they'll just need to bleed the hose and volume of the > standpipe. I don't see the big deal either way. I didn't read the > Code though so don't take that as analysis one is needed or not. > > > > 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 Bobby > Gillett > > Sent: Thursday, May 02, 2013 7:54 AM > > To: [email protected] > > Subject: RE: check valves on dry standpipes > > > > My only thought is when the fire department disconnects their hoses > > the > water can come back through the FDC - some people may still install > single clapper FDC's not thinking ahead or the clappers could stick or > malfunction as well. > > > > Greg - in your case I could understand not needing one, other than > > the > fact it is required. I would check with the AHJ and see if they will > agree with you, then you are covered. > > > > Bobby Gillett > > Sr. Project Manager > > Key Fire Protection, Inc. > > (731) 424-0130 office (731) 424-9285 fax > > (731) 267-4853 cell > > www.keyfireprotection.com > > > > > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] On Behalf Of > John > > Denhardt > > Sent: Thursday, May 02, 2013 7:40 AM > > To: [email protected] > > Subject: RE: check valves on dry standpipes > > > > That is very interesting. I wonder what is the reason one is required? > > > > Steve????? > > > > John August Denhardt, P.E., FSFPE > > Strickland Fire Protection Incorporated > > 5113 Berwyn Road > > College Park, Maryland 20740 > > Office Telephone Number: 301-474-1136 Mobile Telephone Number: > > 301-343-1457 FIRE SPRINKLERS SAVE LIVES - Can you live without them? > > > > > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] On Behalf Of > Bobby > > Gillett > > Sent: Thursday, May 02, 2013 7:07 AM > > To: [email protected] > > Subject: RE: check valves on dry standpipes > > > > We did a manual dry in a parking garage a few years ago, I asked > > this question to the local AHJ and he did require one. NFPA 14 > > (2013) - 6.4.2 requires one. > > > > Bobby Gillett > > Sr. Project Manager > > Key Fire Protection, Inc. > > (731) 424-0130 office (731) 424-9285 fax > > (731) 267-4853 cell > > www.keyfireprotection.com > > > > -----Original Message----- > > From: [email protected] > > [mailto:[email protected]] On Behalf Of > Greg > > McGahan > > Sent: Wednesday, May 01, 2013 10:01 PM > > To: [email protected] > > Subject: Re: check valves on dry standpipes > > > > T > > hanks - that makes three!~! > > > > > > On Wed, May 1, 2013 at 8:45 PM, John Denhardt > > <[email protected]>wrote: > > > >> Agree with you. No check valves required. > >> > >> Fire sprinklers save lives > >> > >> Sent from my iPad > >> > >> On May 1, 2013, at 9:44 PM, "Charles Thurston" <[email protected]> > wrote: > >> > >>> Hello Greg, > >>> > >>> Is it a "Manual Dry" system? If so we do not and the AHJs in the > >>> area > >> see no reason to. > >>> > >>> Wednesday, May 1, 2013, 9:38:18 PM, you wrote: > >>> > >>>> Are you required to put check valves on FDC's supplyign dry > >>>> standpipe systems such as on docks etc? > >>> > >>>> Thanks, > >>> > >>> > >>> > >>> > >>> > >>> -- > >>> Best regards, > >>> Charles mailto:[email protected] > >>> > >>> _______________________________________________ > >>> Sprinklerforum mailing list > >>> [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org > >> _______________________________________________ > >> Sprinklerforum mailing list > >> [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org > > > > > > > > -- > > Greg McGahan > > Living Water Fire Protection, LLC <http://www.livingwaterfp.com> > > 1160 McKenzie Road > > Cantonment, FL 32533 > > 850-937-1850 > > fax 850-937-1852 > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org > > > > ----- > > No virus found in this message. > > Checked by AVG - www.avg.com > > Version: 2013.0.3272 / Virus Database: 3162/6290 - Release Date: > > 05/01/13 > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org > > > > ----- > > No virus found in this message. > > Checked by AVG - www.avg.com > > Version: 2013.0.3272 / Virus Database: 3162/6290 - Release Date: > > 05/01/13 > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkl > er.org > -- Greg McGahan Living Water Fire Protection, LLC <http://www.livingwaterfp.com> 1160 McKenzie Road Cantonment, FL 32533 850-937-1850 fax 850-937-1852 _______________________________________________ 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
