Tony, My take is that you are obligated to provide protection at the deck 1st, and then everything else becomes a potential obstruction to sprinkler discharge below. In this case it seems you will also need to drop protection into the levels of clouds at the 8' level as well.
Jeff Hewitt, PE, SET, SFPE (Professional Member) Corporate Engineer Bi-State Fire Protection Corporation 241 Hughes Lane St. Charles, MO 63301 636-946-0011 636-946-5172 (fax) 314-574-6989 (cell) Fire Sprinklers Save lives. Can You Live Without Them? -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of A.P.Silva Sent: Tuesday, December 14, 2010 10:35 AM To: [email protected] Subject: RE: Ceiling "Clouds I agree with "going in 15' over a suspended ceiling when the space is open to another area...", but is that in the code? A different situation. I have a room about 22 ft. high that has some clouds for acoustics, at about 15 foot level. These are sprinklered up and down. There are also some clouds 6 feet in diameter at the 8' level, for mounting light fixtures. So the difference in height from roof to the 6' dia. Clouds is about 14 feet. Are sprinklers required below these lower clouds? I should mention, this is a seismic area, and the clouds are supported with wires from the roof. Tony -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Steve Leyton Sent: December 14, 2010 8:44 AM To: [email protected] Subject: RE: Ceiling "Clouds I don't think so Jimmy. Up 'til now, the consensus status quo has been to fully sprinkler up and down but I think a case can be made for going back 15' from the opening in the same spirit as going in 15' over a suspended ceiling when the space is open to another area ... SL -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jimmy Waite Sent: Tuesday, December 14, 2010 5:52 AM To: [email protected] Subject: Ceiling "Clouds I know this has been talked about before, but I am having trouble getting onto the archives. I have a situation in an auditorium/lecture hall that has a ceiling that steps down as you get closer to the front of the room. However, there is about a 2'-0 perimeter around the room that is open to the non-combustible space above the ceiling. In this case I'd be willing to sprinkle around the opening (sort of like 8.15.1.5 in the '07), but it seems pointless to provide coverage over this entire lowered ceiling. Is there any code that backs this up? I thought I've heard some, but I don't know where it is. Thanks, Jimmy Waite Design Engineer [email protected] mobile: 919.622.7030 _______________________________________________ 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) _______________________________________________ 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)
