Hello,

I am encountering what seems to be a bug in Revit's ability to calculate square footage of MEP Fabrication Ductwork Wrap and Liner.

It appears Revit doesn't take into account the length of the duct.

The attached PDF shows three things for your consideration.

1. Fabrication Report from Revit (Add-ins > Revit Extension for Fabrication > Fabrication Reports > Print Reports)
2. Revit schedules looking at the same ductwork

Compare the two, the totals are very different.

3. Revit schedule from a blank project with 3 straights of duct, same size, various lengths. This shows the root of the issue, I believe.

Would like to hear from anyone with insight. Or at the very least, anyone feeling my pain.

test_INSULATION REPORT.pdf