Where exactly is a remote area for a fire sprinkler hydraulic calculation drawn with respect to interior and exterior walls?
Is the remote area boundary along the inside, centerline, or outside edge of a wall?
Also, are small wall cavities or unsprinklered shafts right in the middle of a remote area included in that remote area square-footage?
I recognize that as much as I can fine-tooth a layout this really doesn't matter much in the overall scheme - and I typically would add a sprinkler or two to a calculation if the exact location of the remote area boundary would make or break an area threshold - but I've been curious about this as I'd like to be consistent with code and what should be done.
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