That's a good point; the question was whether or not there had to be two connection on each floor, which is not required. But as you say, for very tall buildings it is now required that you have two risers supplying alternate floor. The code is mute on whether you can connect a floor to more than one riser, but the implication would be that you can't unless the adjacent floors can be supplied by a different riser or risers, which tempers my previous response.
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 Leyton Protection Design & Consulting San Diego, CA -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Fairchild, Jack Sent: Monday, September 24, 2012 9:52 AM To: [email protected] Subject: RE: High rise building - dual floor system supplies? The 2012 IBC requires duel risers when buildings are over 420 feet in height. Don't forget the secondary water supply to the fire pump. [F] 403.3.1 Number of sprinkler risers and system design. Each sprinkler system zone in buildings that are more than 420 feet (128 000 mm) in building height shall be supplied by no fewer than two risers. Each riser shall supply sprinklers on alternate floors. If more than two risers are provided for a zone, sprinklers on adjacent floors shall not be supplied from the same riser. Jack Fairchild -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Dewayne Martinez Sent: Monday, September 24, 2012 12:49 PM To: [email protected] Subject: RE: High rise building - dual floor system supplies? Thanks, That's when I have run into it also but someone in the office thought it was for any high rise so since I couldn't find anything in 13 I thought I check here just in case. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Steve Mackinnon Sent: Monday, September 24, 2012 11:23 AM To: [email protected] Subject: RE: High rise building - dual floor system supplies? The only time I've had to have two water supplies within a high rise, was a Ritz Carlton (due to a Marriott Hotel Specification) Steven MacKinnon Senior Fire Protection Engineer Hartcorn Plumbing & Heating Inc. 850 South 2nd Street Ronkonkoma, NY 11779 631-580-2300 - Office 631-580-1090 - Fax [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Dewayne Martinez Sent: Monday, September 24, 2012 11:10 AM To: SprinklerFORUM Subject: High rise building - dual floor system supplies? Does a high rise building require that the sprinkler system on each floor be dual feed? IE: supplied from 2 individual standpipes per floor. Thanks, Dewayne Martinez Design Build Fire Protection 262-784-7900 (w) 262-784-8401 (f) 414-349-0468 (cell) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attach ments/20120924/9381b730/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
