Ahhh. It seems clear to me that it is not the open grating that is the key, it is the under 4ft fixed obstruction that would allow the elimination of sprinklers provided the obstruction could be cleared according to the charts. I had just thought that I had remembered that if the grating was a certain percentage "open" or if the grating had a minimum 1/2" openings or something to that regard; that sprinklers could be eliminated. Clearly no storage etc...but I am talking about a cell walkway 12 feet high. Probably just not remembering correctly. Some of the other comments are interesting in regards to anti defacation and minimum width so I will check into those. Thank you all for your responses I will update you with what happens...Oh and just for fun how about one of my favorite twain comments "Whenever you find that you are on the side of the majority, it is time to reform."
Rod -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ron Greenman Sent: Thursday, April 05, 2007 11:47 AM To: [email protected] Subject: Re: open grate flooring Rod, I'm always eager to make snide remarks, inductively logis out a problem so that the answer is likely to be, to paraphrase Twain, simple, obvious and wrong, discuss the indisputable like Newtonian physics or my politocal opinions, or tell stories about Ferraris, but I usually hesitate to interpret codes and standards (at list on the list). In this case though I think the standard is pretty clear. This catwalk is an obstruction and 47 63/64 inches is under 48. I've suggested this exact remedy to customers. in a jail it has an even greater utility than just the cost savings. The guests at every steel bar hotel seem to be really skillful at wrecking whatever you do. They're even better at it than children so anything that can be done to reduce the number of attractive nuisances is a win. On 4/5/07, Rod DiBona <[EMAIL PROTECTED]> wrote: > 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) > -- Ron Greenman at home.... _______________________________________________ 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)
