Thank you Craig, That is perfect. I was conveying this issue to the builder and his response was “I have no idea”. Not very helpful…
Chris Dorn From: Craig Hanson <cra...@wc-3.com> Sent: Friday, June 30, 2023 9:57 AM To: Discussion list on issues relating to automatic fire sprinklers <sprinklerforum@lists.firesprinkler.org> Subject: [Sprinklerforum] Re: Residential Layouts Chris here is my comment I use when dealing with your situation: Protection Against Freezing- These are areas that are subject to freezing and require that the piping be protected by either direct heating, heat trace, dry system or anti-freeze [NFPA 13R 6.7.2.1*]. Although it is the owner’s responsibility to maintain areas above 40F, it is the designer’s responsibility to ensure the piping is in a conditioned area [NFPA 13(HB): 8.16.4.1.1*]. Using of heat trace or other methods need to be approved by the AHJ. Tenting of pipe can only be used when the space below the piping is heated, however, an alternative is to have a professional engineer supply heat loss calculator that the system will not freeze (taking into account of an open garage door) [NFPA 13: 8.16.4.1.5]. If using a conditioned chase, then it needs to be designed and shown on plans. Craig D. Hanson, CFPS Senior Fire Plans Examiner West Coast Code Consultants, Inc. (WC³) Meridian Satellite Office C: 253.225.9977 | E: cra...@wc-3.com<mailto:cra...@wc-3.com> | www.WC-3.com<https://www.wc-3.com/> Teaming With Your Community to Make a Difference On Fri, Jun 30, 2023 at 7:54 AM Chris Dorn <chris.d...@dornfireprotection.com<mailto:chris.d...@dornfireprotection.com>> wrote: Interested to see the responses as I’m dealing with this same question. Also when the building has breezeways instead of corridors how do you get from one block of units to the other without having piping in an unheated area? Thanks, Chris Dorn From: Brian Harris <bhar...@bvssystemsinc.com<mailto:bhar...@bvssystemsinc.com>> Sent: Friday, June 30, 2023 9:41 AM To: sprinklerforum@lists.firesprinkler.org<mailto:sprinklerforum@lists.firesprinkler.org> Subject: [Sprinklerforum] Residential Layouts I do a residential/apartment project about once every couple years so each time it’s like starting from scratch. For you guys that do these a lot which way is preferred; running mains and branchlines in joist with pendent heads on the first floor and then “bird cage” vertically with sidewalls on the upper floors or mains and branchlines all floors with pendants? Brian Harris, CET BVS Systems Inc. bvssystemsinc.com<http://bvssystemsinc.com/> Phone: 704.896.9989 Fax: 704.896.1935 _________________________________________________________ SprinklerForum mailing list: https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org To unsubscribe send an email to sprinklerforum-le...@lists.firesprinkler.org<mailto:sprinklerforum-le...@lists.firesprinkler.org>
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