Mark,
I'm not sure I'm buying in to what you said. "The sidewalls in the
ceiling pockets with reduce any delay in sprinkler operation due to the
pockets and essentially provide "extra water" to the floor area
below." Wouldn't the activation of the sidewall sprinkles in the
ceiling pocket slow down the activation of the sprinklers at the
lower level by interrupting the ceiling jet? It would get water to
the fire, but there is a reason why sidewalls are not approved for
Extra Hazard. It may be just that they have never been tested or it
may be something inherent with the design that does not work on
higher hazard occupancies.
Also, what spacing would you use? NFPA 13 gives specific spacing
requirements for LH and OH, but not EH. I'm assuming that these are
not extended coverage and that they would be calculated at the EH density.
I'd be hesitant to put my stamp on something like that.
Todd
BTW, I just passed my Bucket Test and now have my Bucket License! If
any of you need help, contact me off forum. 8-)
Todd G. Williams, PE, SET, Bucket
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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