Travis check out 8.15.1.5 (2). Localized protection looks to be a viable option. It doesn't matter that you have a continuous 200 ft. corridor.. the protection only has to be 'localized' in the vicinity of the combustibles.
On Thu, Jul 17, 2014 at 9:34 AM, Travis Mack <[email protected]> wrote: > The project meets the criteria for not having 3000 sq ft, so we are good > there. > > I question the "localized" idea because I have a corridor that is 200'x8'. > There is 60' of space that has these wood framing members. The space > above the ceiling is continuous for the 200'. So, just putting sprinklers > in that 60' doesn't seem to meet the intent of NFPA 13 as I understand it. > However, I would be happy to be wrong. My gut is that we have to protect > all 200'. There are 2 of these corridors on each floor. Because they are > flat and <36", I believe we need specially listed sprinklers (CC2 or > equal). So, we are looking at 17 sprinklers per corridor x 2 corridors x 5 > floors which is an additional 170 sprinklers the installer was not > anticipating. I can understand his concern. > > > Travis Mack, SET > MFP Design, LLC > 2508 E Lodgepole Drive > Gilbert, AZ 85298 > 480-505-9271 > fax: 866-430-6107 > email:[email protected] > > On 7/17/2014 9:26 AM, Bob wrote: > >> Not sure what your question " does localized meet anything in NFPA 13" is >> referring. Localized certainly meets the criteria of NFPA 13 if the area >> is >> an otherwise noncombustible space. The structure would be "fully >> sprinklered" per 13, but another point that I just thought of is since >> this >> is TJI construction are the channels filled with noncombustible >> insulation? >> If not isn't a 3000 sf area required per 11.2.3.1.4? >> >> >> Thank You, >> >> Bob Knight, CET III >> 208-318-3057 >> www.Firebyknight.com >> >> >> >> -----Original Message----- >> From: Sprinklerforum [mailto:[email protected]. >> org] >> On Behalf Of Travis Mack >> Sent: Thursday, July 17, 2014 10:02 AM >> To: [email protected] >> Subject: Re: 8.15.1.2.1 and A8.15.1.2.1 NFPA 13 (2013) >> >> Well, does localized meet anything in NFPA 13? I don't think so. That is >> my concern for doing just limited area protection. Also, since the >> architect is using the sprinkler system to get the area increase, I don't >> think that a limited protection of these areas would allow the area >> increases for a NFPA 13 system. While it makes sense, I just don't want >> to >> be in the grey areas. These are basically open on 2 ends, so the >> exception >> for extending into the unprotected side doesn't apply. If this were only >> open on one side, that would work. My gut is telling me that we have to >> protect the entire 200' corridor. >> >> As an additional question to this, even if the AHJ would permit them to be >> omitted, would that alleviate the designer/installer of liability. >> My fear is that it will not alleviate the liability. I am pushing to have >> the space protected or having some other method to make it >> non-combustible, >> such as metal hat channels to support the sheet rock. >> >> Travis Mack, SET >> MFP Design, LLC >> 2508 E Lodgepole Drive >> Gilbert, AZ 85298 >> 480-505-9271 >> fax: 866-430-6107 >> email:[email protected] >> >> On 7/17/2014 8:44 AM, Bob wrote: >> >>> T, >>> This is a very subjective quantity that is up to you and the AHJ to >>> agree upon. There are several AHJ'S that I deal with that would agree >>> that your situation would allow for omission, but I have one AHJ who >>> would >>> >> not agree. >> >>> Have you, or are you, considering providing localized protection just >>> for these areas per NFPA 13 8.15.1.5? >>> >>> Thank You, >>> >>> Bob Knight, CET III >>> 208-318-3057 >>> www.Firebyknight.com >>> >>> >>> -----Original Message----- >>> From: Sprinklerforum >>> [mailto:[email protected]] >>> On Behalf Of Travis Mack >>> Sent: Wednesday, July 16, 2014 2:16 PM >>> To: [email protected] >>> Subject: 8.15.1.2.1 and A8.15.1.2.1 NFPA 13 (2013) >>> >>> Has anyone been able to determine what is an acceptable amount of >>> non-structural wood? We have a hotel project. It is TJI construction >>> with sheet rock to the bottom of the TJI throughout the building >>> >> construction. >> >>> Under that, in the corridor, they have a dropped ceiling that is >>> acoustical tile and then every +/-40', there is a 15' span of gyp >>> board ceiling. The builder is framing the gyp board ceiling with wood >>> structural members. In a 200' corridor, there is about 60' of these >>> gyp board areas. Would this qualify as an area needing sprinklers or >>> would you not put sprinklers in this area? >>> >>> -- >>> Travis Mack, SET >>> MFP Design, LLC >>> 2508 E Lodgepole Drive >>> Gilbert, AZ 85298 >>> 480-505-9271 >>> fax: 866-430-6107 >>> email:[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 >>> >> _______________________________________________ >> 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 >> > > _______________________________________________ > 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
