It just became a NON-ISSUE. As you said, QR is required which is explicitly forbidden above drop-out ceilings. Educate the architect and ask what other bright ideas they have to ruin your day.
Roland Roland Huggins, PE - VP Engineering American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives Dallas, TX http://www.firesprinkler.org <http://www.firesprinkler.org/> > On Apr 6, 2015, at 9:13 AM, Travis Mack <[email protected]> wrote: > > This is getting crazier as it goes along. The building was originally > designed as light hazard and to be offices only on the lower level. Now they > want to bring in a restaurant. So, there are some issues with ordinary > hazard coming in to play. > > Also, these ceiling tiles will be above the restaurant seating area which is > light hazard, so we have to put QR in the area to be in compliance with NFPA > 13. The sprinkler contractor is trying to get them to forego the idea of the > drop out ceilings. It is still all in flux right now. > > Travis Mack, SET > MFP Design, LLC > 2508 E Lodgepole Drive > Gilbert, AZ 85298 > 480-505-9271 > fax: 866-430-6107 > email:[email protected] <mailto:[email protected]> > > http://www.mfpdesign.com <http://www.mfpdesign.com/> > https://www.facebook.com/pages/MFP-Design-LLC/92218417692 > <https://www.facebook.com/pages/MFP-Design-LLC/92218417692> > Send large files to us via: https://www.hightail.com/u/MFPDesign > <https://www.hightail.com/u/MFPDesign> > > On 4/6/2015 9:10 AM, Roland Huggins wrote: >> I would not jump to the conclusion that you have to change to a higher temp >> rating. Must confess, I’ve seen only one drop-out ceiling (well 80% >> drop-out since 8 or 10 standard ceiling tiles had been installed long after >> the initial installation) and this issue has never come up in the last 20 >> years. >> >> Even at a slightly higher temp rating, the ceiling is still exposed first >> and not sure how much heat gets past it before it drops out. Any idea >> what's the ceiling RTI rating - lol. >> >> What does the manufacturer data sheet say? A quick search shows the UL >> certification is based on SR sprinklers with a 165 F rating. >> >> A bigger first question is what is the occupancy classification so as to >> ensure that SR sprinklers are acceptable. Can not use QR or EC above these >> ceilings (13:8.15.15.2). >> >> Roland >> >> >> Roland Huggins, PE - VP Engineering >> American Fire Sprinkler Assn. --- Fire Sprinklers Saves Lives >> Dallas, TX >> http://www.firesprinkler.org <http://www.firesprinkler.org/> >> <http://www.firesprinkler.org/ <http://www.firesprinkler.org/>> >> >> >> >> >> >>> On Apr 6, 2015, at 7:59 AM, Travis Mack <[email protected]> wrote: >>> >>> Is anyone running into these things lately? How are you handling them? >>> >>> I have never really been a fan of these things. A customer has a job where >>> the builder is wanting to use these tiles to eliminate the need for >>> sprinklers at the ceiling. We did the shell space and there are 155 degree >>> uprights at the deck. This is 1st floor of a 4 story building. >>> >>> The tiles are rated at 165f. The sprinklers will have to be changed to 200F >>> so the sprinklers will activate after the tiles fall. >>> >>> What is your thoughts on these things? >>> >>> Travis Mack, SET >>> MFP Design, LLC >>> "Follow" us on Facebook: >>> https://www.facebook.com/pages/MFP-Design-LLC/92218417692 >>> Send large files to MFP Design via: >>> https://www.hightail.com/u/MFPDesign >>> >>> Sent from my iPhone >>> _______________________________________________ >>> Sprinklerforum mailing list >>> [email protected] >>> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >> _______________________________________________ >> Sprinklerforum mailing list >> [email protected] >> <mailto:[email protected]> >> http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org >> <http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org> > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > <mailto:[email protected]> > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > <http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org> _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
