Well, you have to go 24 feet which ends up being an area of approx, 55' x 54' that you are now required to put heads in. I Although the example in the handbook refers to a warehouse/office space in which the clarification is that protection must extend 24' over the offices and the area of greater hazard is outside the 24' zone, I guess it is similar, but it is a stretch in my opinion.
In this case, the greater hazard is surrounded by a lesser hazard on 4 sides, Therefore if 8.15.22.3 applies, we will end up protecting the entire non-combustible interstitial space. Before I argue for this change order I want to make sure this is the intent on the code. Thanks, Greg On Thu, Mar 10, 2011 at 10:31 AM, Bob Knight <[email protected]> wrote: > I think in this case you are "cooling" the structure in an area that heat > could become a factor. 2010 ed. Requires .6 times the sq rt of the area or > a minimum of 24' extended into areas such as this (8.15.22.3 & .4). > > BK > > -----Original Message----- > From: [email protected] [mailto: > [email protected]] On Behalf Of Brad Casterline > Sent: Thursday, March 10, 2011 9:10 AM > To: [email protected] > Subject: RE: partial walls in mech rooms > > I cannot get past the idea that we normally put water on floors, not on the > tops of ceilings! > > -----Original Message----- > From: Greg McGahan [mailto:[email protected]] > Sent: Thursday, March 10, 2011 10:00 AM > To: [email protected] > Subject: Re: partial walls in mech rooms > > It is not CLEAR, this section appears to refer to the "cloud" situation we > are often running into. > > I am not trying to get out of something here, I am trying to document why > we have to do it. We have used the 15' rule in the past, but again, that is > truly intended for another situation, in my honest opinion. This section is > to avoid fusing heads in adjacent areas, not require additional > protection... as I read it. > > On Thu, Mar 10, 2011 at 9:47 AM, Morey, Mike <[email protected]> wrote: > > > On second reading, if you're saying the LH areas have a ceiling but > > the mechanical rooms don't then 8.15.22 does apply, in which case the > > higher area is the roof deck, which means you provide the protection > > for the mechanical room at the deck and for 24' in any direction away > > from the mechanical room over the ceiling of the LH space. > > > > -Mike Morey, SET > > Sprinkler Designer > > BMW Constructors, Inc. > > office: 317-651-0596 > > mobile: 317-439-2695 > > > > ________________________________ > > > > From: [email protected] on behalf of Greg > > McGahan > > Sent: Thu 3/10/2011 10:21 AM > > To: [email protected] > > Subject: partial walls in mech rooms > > > > > > > > We have an issue right now with a light hazard non-combustible > > building in which there are multiple small mechanical rooms -3' x 8' > > or 6' x 7' in general size. The architect was vague so the GC is not > > putting in ceilings nor is he running the walls up to the deck. > > > > I have been reading and rereading chapter 8 of 13 -2010 edition, and I > > cannot conclusively determine what we are required to do in this case. > > The description in 8.15.22.1 is not exactly correct so I can't see > clearly... > > > > Does anybody have a cut and dry answer? > > Thanks, > > Greg > > > > -- > > Greg McGahan > > Living Water Fire Protection, LLC > > 1160 McKenzie Road > > Cantonment, FL 32533 > > 850-937-1850 > > fax 850-937-1852 > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > For Technical Assistance, send an email to: [email protected] > > > > To Unsubscribe, send an email > > to:[email protected] > > (Put the word unsubscribe in the subject field) > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > For Technical Assistance, send an email to: [email protected] > > > > To Unsubscribe, send an email > > to:[email protected] > > (Put the word unsubscribe in the subject field) > > > > > > -- > Greg McGahan > Living Water Fire Protection, LLC > 1160 McKenzie Road > Cantonment, FL 32533 > 850-937-1850 > fax 850-937-1852 > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > For Technical Assistance, send an email to: [email protected] > > To Unsubscribe, send an email to:[email protected] > (Put the word unsubscribe in the subject field) > -- Greg McGahan Living Water Fire Protection, LLC 1160 McKenzie Road Cantonment, FL 32533 850-937-1850 fax 850-937-1852 _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
