We have a project where the fire inspector is stating that the fire sprinkler 
main is too close to ductwork.  There is a 6” main that is about 1/2” from the 

Of course, the inspectors response is “it’s in the code book” when asking for a 
reference that mandates clearance to hvac ductwork. 

Has anyone run into something similar?

Note: this is not a high temp duct that would cause for enough heat to convert 
the sprinkler water to steam. This is just your standard, run of the mill, HVAC 

Travis Mack, CFPS, CWBSP, RME-G, SET
480-505-9271 x700
MFP Design, LLC
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