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
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--
Ron Greenman
at home....
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