Rod, The picture I had was the typical two-tier cell block surrounding a high ceiling dayroom with the walkway you're addressing being the second level, cantilevered walkway that goes to the stairway. This would essentially be a high ceiling single floor with stacked bedrooms. Is this correct? If this is the case I still think your solution is viable. I'd check the Cds as others have suggested but if I recall properly, barring no change since the last time I was in jail (working--not as a guest of the county/state/fed), the walkway was always exempt from sprinklers. Per 13 if the horizontzl obstruction is under 48" in at least one dimensionit then it doesn't require protection below. Whether it is solid or grated or slatted or honeycombed or anything else you can think of is irrelevant.
On 4/5/07, Ray Schmid <[EMAIL PROTECTED]> wrote:
I would check the CD's to see what the construction type is first. If the facility is more than 2 stories, the floor/ceiling assembly is required to be rated and the open grated concept is probably not feasible. Protected construction may also be required due to the allowable area. Ray Schmid -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rod DiBona Sent: Thursday, April 05, 2007 1:07 PM To: [email protected] Subject: open grate flooring I am working on a large jail project where the architect has asked me to provide value engineering ideas. One of the things that I am considering bringing to his attention is the possibility of turning their upper cell walkway into an open grate flooring of 4' or less. I was pretty sure that this would eliminate the need for sprinklers under these walkways but I wanted to substantiate it before I presented it. NFPA 13 02 edition 8.5.5.3.1 states " Sprinklers shall be installed under fixed obstructions over 4ft wide such as ducts, decks, open grate flooring, cutting tables, and overhead doors". Am I correct in assuming that if these "floors" are 4' or less that sprinks will not be required? I thought that I remembered that there were other requirements such as percentage or size of openings similiar to the meshing in nursing home curtains but I can't find it anywhere. Any help is appreciated. Thanks, Rod DiBona Rapid Fire Protection _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
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