No, Tom, the remainder of the space is "light hazard" which is the space above the ceiling OVER the sales area. The space under the ceiling is protected at 0.20 gpm/ft2, but the space at the combustible roof deck would only require LH density, even though the sprinklers there were spaced at 130 ft2 in the original install.
Thanks, -- PARSLEY CONSULTING Ken Wagoner, SET 760.745.6181 voice 760.745.0537 fax [email protected] <mailto:[email protected]> e-mail www.ParsleyConsulting.com <http://www.ParsleyConsulting.com> website tom poisal wrote: > Ken thats how I see it. But the remainder of your space is "sales" which is > mercantile, ORD GP II - .2 density > > On Fri, Jul 16, 2010 at 2:24 PM, ParsleyConsulting < > [email protected]> wrote: > > >> Tom, >> >> I have a building which has a 260 sqft area which requires 0.5 gpm/sqft >> over 2,500 sqft due to storage commodity and height. The unrated walls >> separating the storage area from the sales area extend a foot above the >> 11'-0" ceiling in the sales area, while the storage area is open to the >> 16'-0" roof deck. Total suite area is only 1,300 ft2. >> >> Do I have to extend the 0.5 density to the entire rest of the space >> above the ceiling which is adjacent and open to the storage room? Or do >> I simply extend it 150'-0" past the room, based on Section and Table >> A.12.3 ('10 edition of -13)? >> >> My interpretation of those sections, along with 12.3(1) is that I'd have >> to provide 0.5 gpm/sqft over the storage area, plus 15'-0", while the >> remainder of the space would only require 0.10 gpm density for light >> hazard. The high temp sprinklers would have to extend beyond the >> storage area by 30', but only the first 15' require the higher density. >> >> Does that line up with your thinking? >> -- >> >> PARSLEY CONSULTING >> >> Ken Wagoner, SET >> >> 760.745.6181 voice >> >> 760.745.0537 fax >> >> [email protected] <mailto:[email protected]> e-mail >> >> www.ParsleyConsulting.com <http://www.ParsleyConsulting.com> website >> >> >> >> >> >> tom poisal wrote: >> >>> Russell, the latter is correct, .3 over the area plus 15' border. the >>> balance is .2. The size of the of the operating area is determined by >>> >> the >> >>> higher hazard. A.11.2.3.1.1 (02 handbook) >>> >>> On Fri, Jul 16, 2010 at 11:10 AM, Russell <[email protected] >>> wrote: >>> >>> >>> >>>> Please bear with me for not letting this topic go but I need to confirm >>>> something. I cannot remember the last time I dealt with adjacent hazards >>>> that were not separated by a partion. >>>> NFPA 13 '10 A11.1.2 leads me to believe that if a .3 density hazard >>>> requires 2500 s.f. then the remote area for that hazard would take in >>>> >> that >> >>>> area and as much of the .2 density hazard area as necessary to fulfill >>>> >> the >> >>>> 2500 s.f. (understanding that the .3 would not be required for the .2 >>>> >> area). >> >>>> That doesn't seem just to me. If the .3 area plus the 15' border doesn't >>>> cover enough area to attain 2500 s.f. then use only all the area it does >>>> involve plus the border because the .2 occupany isn't the same fire >>>> >> threat. >> >>>> Does that make any sense? >>>> >>>> Russell >>>> >>>> >>>> >>>> >>>> >>>> ________________________________________________________________ >>>> Sent via the WebMail system at brownautomatic.com >>>> >>>> >>>> >>>> >>>> _______________________________________________ >>>> 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]<to%[email protected]> >> <to%[email protected]<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]<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)
