I work at a healthcare facility whose kitchen has an unusual sprinkler head set up.
7 feet from a sprinkler head, there's an enclosed duct that drops down 1 foot and is 18" wide. 6 inches beyond the edge of the duct, there's another sprinkler head on the ceiling. The duct obstructs the sprinkler head from spraying in that direction.
Would I need to lower my sprinkler head to the bottom edge of the duct
Does the 1st sprinkler head cover everything up to and under the duct and the 2nd head just cover beyond the duct?
The specific code relating to this would be helpful.