8.10.4.1 of the 2002 edition says that residential heads are to be no more than four inches from the ceiling unless the listing allows more.Check the listing. If there is nothing in there that allows the deflector distance to be down to 11" then you will need sprinklers in the higher pocket.
The ceiling pocket exception is not listed in the code for residential heads. Switch to a standard or extended coverage heads instead. Any code developers know the reason why the ceiling pocket exception was left out of the residential head section??? I am curious to know. Justin D. Reid, P.E. RLH Fire Protection 16735 Saticoy St. #110 Van Nuys, CA 91406 213-798-0251 Sent from my iPhone On Mar 9, 2009, at 5:31 PM, George Medina Jr <[email protected]> wrote: > I have a 500 sq. ft. room which has a soffit around the perimeter > that sticks out 12" and is 11" from the ceiling. My boss seems to > think that I can put a sprinkler under the soffit on each side of > the room and since the soffits are 12'-6" apart (on each side of the > wall) we do not have to add sprinklers in the ceiling pocket > (because of the 1000 cubit feet rule). Can we put a residential > pendent 11" from the higher ceiling (under the soffit). Are pendent > spacing is 16' x 16'. > > George Medina Jr. > Sr. Fire Sprinkler Designer > 95-1015 Ka'apeha Pl. > Mililani, HI 96819 > 808-388-5974 CL# > > > George Medina Jr. > Sr. Fire Sprinkler Designer > 95-1015 Ka'apeha Pl. > Mililani, HI 96819 > 808-388-5974 CL# > _______________________________________________ > Sprinklerforum mailing list > http://lists.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 http://lists.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)
