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Forums >> Revit Systems >> Technical Support >> Calculating CFM on Return Ductwork problem

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Mon, Dec 1, 2008 at 1:43:37 PM | Calculating CFM on Return Ductwork problem

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Revit seems to choke on calculating total CFM when you tap more then once into a duct.  IE: I have a main return air trunk and I have 2 branches tapping into it before it changes size.  The CFM totals 0 out.  But the CFM totals down the line of the taps are correct.  Is there a solution to this? Or maybe something that I am missing?Thanks!

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