You could follow either (NFPA 13 - 2010) 8.5.7 for a skylight or deep pocket condition or 8.6.7 which permits a larger, but maximum 36 inch deep pocket.
Robert J. Pielow, P.E. Fire Protection & Life Safety -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Richardson, R Sent: Thursday, April 22, 2010 10:57 AM To: sprinklerforum@firesprinkler.org Subject: RE: skylights vs. ceiling pockets When you say the "prescribed limitations on size and dimension" you must be referring to the ceiling pocket language. The problem is that the ceiling pocket section says you do not need to sprinkler skylights separated by 10 ft. each one less than 32 sq.ft. with no apparent restrictions on depth. Rich -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Pielow, Robert Sent: Thursday, April 22, 2010 08:53 To: sprinklerforum@firesprinkler.org Subject: RE: skylights vs. ceiling pockets I do not believe NFPA 13 requires a sprinkler in either a pocket or skylight that meet the prescribed limitations on size and dimension. The recesses are required to be separated by at least 10 feet so any delay caused by the height of the pocket would not have an impact. The sprinkler handbook provides a good description of this condition. It references skylights or "similar pockets". Robert J. Pielow, P.E. -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Richardson, R Sent: Thursday, April 22, 2010 10:38 AM To: sprinklerforum@firesprinkler.org Subject: skylights vs. ceiling pockets Am I understanding the standard correctly in that a ceiling pocket that would otherwise require sprinklers may no longer require sprinklers if I were to install a skylight in the pocket, regardless of depth etc.? If the answer is yes, any logical reasons one could offer would be helpful. Thanks, Rich Richardson Seattle Fire Department _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field)
