The definition refers to BOTH issues.
If you think about for a second, I suspect you'll change your
position on ceilings. It's the lower ceiling that will have the
higher propensity for rolling over the obstruction (like Katrina or
any other female when laying down the law - of physics or anything
else). The evaluation for ceiling pockets highlighted that momentum
plays such a key role in initial activation/ heat flow. The higher
ceiling will have lower velocities
Roland
On Oct 19, 2007, at 12:51 PM, å... .... wrote:
I thought the obstructed definition referred to "obstructing"
the sprinkler spray pattern. But if we are talking about
obstructing the flow of heat, as well,
did anyone mention entrainment height, and what effect
that will have on ceiling jet depth. if the ceiling is high
enough, the jet is going to roll over the purlin obstructions
like Katrina over a levee, only MORE so.
definitions are good for making discussions and decisions
but the ceiling jet is listening to the laws of physics i bet
scot deal
excelsior fire engineering
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