I would image that you could create a Duct Schedule sorted by their individual size Parameters (i.e. Height, Length, Diameter) and create a Calculated Value to total up the volume. In fact, I believe that there is already an "Area" parameter that may of some use. For each type of Duct (Rectangular, Round, Oval) you would need a separate Calculated Value or perhaps a Separate Schedule to keep it cleaner. I don't think that this would account for Duct Fittings, though.
Corey D. ────────────────────────────────────────────────────────────────────── ⁞|⁞ Please use .Accept as Solution and Give Kudos as appropriate to further enhance these forums. Thank you!
The area that Revit gives in the schedule is Sheetmetal area. It's kinda odd that volume isn't here for ducts. You would have to do Height * Width * Length for Rect duct, and the other thing for Round. You can sort the schedule by system name, set up the calculated values to calc the Volume of each duct, and set the "Volume" to calculate totals in the formatting tab. It is a lot to do, but I had done this to calculate total duct weight on a project.