DMartin
Registered User
10500 CFM gun range exhaust fan. Mounted to isolator springs but those are mounted to wood runners that are just sitting on rubber mats. Not attached to roof. I know deep inside me this is not good. But engineer is asking for code cite. There is nothing for a one off fan in IMC that I am finding. Manufufacturer made specifically for the application and cannot give a mounting spec. Any suggestions of a mounting code for exhaust fans. I would think this needs to be on curbs just like any other rooftop unit. Would love to post pictures but not sure how.