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/> > 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] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
