I am designing a system for a pool annex to a hotel. Construction is
all wood. Over the pool itself there is a ceiling pocket. The plan is
to run a loop around the perimeter of the pocket with dry pendents in
the low area, and rising up to sidewalls to protect the pocket. The
space above is to be protected by Tyco Attic Sprinklers. What I want
to do is to connect the line of attic sprinklers on either side of
the lower loop, creating a multiple or compound loop. Does this
violate the restriction on gridded dry systems, considering that a
grid is no more than a series of loops? If I can do this compound
loop (which really helps hydraulically), where would be the cut-off
between a compound loop system and a grid system? I am not that
worries about trip times because I am next to the riser room.
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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