Considering that a 4 story building can be a SINGLE zone for ALL
floors, still can't see the barrier driving a split per floor
zoning. The mention of triggering smoke control does flag that it
could be a performance based design building, then all bets are off.
For a PBD, such thing are documented.
You may very well being dealing with a "seemed like a good idea at
the time" issue.
Roland
On Mar 10, 2008, at 1:55 PM, Justin Reid wrote:
Zoning the sprinkler system to one side versus the other will tell the
fire department which side of the horizontal exit the fire is located.
They may be stating that separate zoning is needed so they know which
side of the horizontal exit to respond to. That is the only reason
I can
think of to zone the two sides differently. And to answer your
question,
I have not seen a system split into two zones for just a horizontal
exit. But I am a newbie ( <5 years in the business so I would defer to
others on that).
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