NFPA 13 is different from 13R in that 13R requires up to the four most demanding sprinklers within a compartment, but 13 requires the four most demanding sprinklers which may or may not be within the same compartment. When doing multi-family projects that fall under 13, I typically wind up calculating all of the sprinklers within the living/kitchen areas and a bedroom (or two) depending on what it takes to reach the required four heads. I’ve never taken the calculation for a unit beyond the unit. But then I normally do a separate calculation for the corridors, too.
[CFP LOGO2] Curtis Tower | Project Design Manager 10550 Olympic Drive, Dallas, TX 75220 Office: (214)496-9797 | Cell: (682) 667-0323 | Fax: (214)496-9201 [email protected]<mailto:[email protected]> | http://www.centralfireprotection.net/ Central Fire Protection | Since 1982 | Dedicated People | Powerful Protection<http://www.centralfireprotection.net/> From: Steve Leyton [mailto:[email protected]] Sent: Wednesday, July 06, 2016 2:04 PM To: [email protected] Subject: RE: Dwelling Unit Sprinkler Calc What state is that? In CA, you have to have one-hour between dwelling units. SL From: Sprinklerforum [mailto:[email protected]] On Behalf Of Dewayne Martinez Sent: Wednesday, July 06, 2016 11:49 AM To: [email protected]<mailto:[email protected]> Subject: RE: Dwelling Unit Sprinkler Calc I would watch out on this. I am designing a high rise right now that the builder states the only fire rated walls per floor are the common corridor walls. I asked if the walls between the units will be rated and he said no. From: Sprinklerforum [mailto:[email protected]<mailto:[email protected]>] On Behalf Of Roland Huggins Sent: Wednesday, July 06, 2016 12:55 PM To: [email protected]<mailto:[email protected]>; [email protected]<mailto:[email protected]> Subject: Re: Dwelling Unit Sprinkler Calc I’d look at whether it qualifies for the room design method (since dwellings units are separated by fire rated construction but the protection of openings poses a question). Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org<http://www.firesprinkler.org/> On Jul 5, 2016, at 12:34 PM, Bob <[email protected]<mailto:[email protected]>> wrote: I have a NFPA 13 building with Dwelling Units. They each have three Residential Sprinklers. 13 requires a four head calc. Can I calc the 3 residential sprinklers and pick up one QR sprinkler in the corridor and still satisfy the 4 head requirement? Or, should I pick up one residential sprinkler from an adjacent dwelling room? Thank you, Bob Knight, CET III 208-318-3057 [cid:[email protected]] _______________________________________________ Sprinklerforum mailing list [email protected]<mailto:[email protected]> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
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