We have local ahjs that require dual feed for all most all systems however; you can only use the most remote feed in the calculations. NFPA 13 requires the signage.
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: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of George Church Sent: Thursday, October 27, 2011 4:17 PM To: sprinklerforum@firesprinkler.org Subject: RE: Dual floor control assembies There would have to be or a single flow would set off all WFSs since it would act as a big vertical grid. Believe the dual connection is Marriott standard on high-rises, much to my chagrin. Posting a sign at both sides that it's dual feed is something my insurance carrier would make me post- what if you got dragged into some bonehead that shut a side, opened the drain, let it flow while going to the head with ladder, and ASSUMED it was drained and pulled the head? If you installed and didn't post signage, you're dragged into it and have some mud you could have avoided. Even 1 5% culpability of a $1m claim in a highrise is $150k on your loss runs- for years.....and you could stick a zero on the end of that portion pretty easily if their lawyer convinced the unwashed jury that you'd done something unusual and mislead his poor unsuspecting bonehead. I haven't done a dual feed I can recall since 80's there has to be a reason why. I recall when I did it (Stonybrook Manor), the code changed prohibiting like a year later. George L. Church, Jr., CET Rowe Sprinkler Systems, Inc. PO Box 407, Middleburg, PA 17842 877-324-ROWE 570-837-6335 fax g...@rowesprinkler.com -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Garth W. Warren Sent: Thursday, October 27, 2011 3:00 PM To: sprinklerforum@firesprinkler.org Subject: Re: Dual floor control assembies I believe there is a requirement for check valves at each connection. Garth ----- Original Message ----- From: "Ronl.Fletcher" <rfletc...@aerofire.com> To: <sprinklerforum@firesprinkler.org> Sent: Wednesday, October 26, 2011 1:13 PM Subject: Dual floor control assembies > Is anyone aware of a prohibition against having two floor control > assemblies on each floor connected to two different standpipes and > calculating the loop to size the sprinkler main? > > > Ron Fletcher > Aero Automatic > Phoenix, AZ > > > > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@firesprinkler.org > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
