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Sprinkler heads on both sides of obstruction?

Question asked by rweinschneider on Feb 17, 2020
Latest reply on Feb 17, 2020 by cdafd

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

or

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.

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