I just got one in to review where the designer used the Room Design method for am NFPA 13 retirement home corridor, but did not use the Corridor 5-sprinkler provision. He was considering the corridor the "room", but really didn't even include the entire corridor. I think I can help him out by directing him to the 5-sprinkler corridor methods (opening protection doesn't even come into play). It is a corridor protected by a single row, BUT another corridor tees off it at 90-degrees.
Do these "tee" intersections negate the "single row" provision?
Each leg IS protected by a single row so I'm thinking this does not negate the intent. Thoughts?
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