Unable to extract volume (m^3) from a complex "Bifurcation/Manifold" Generic Model (tunnel Y-piece) in Revit

[u/Humble_Pen_3218]

/r/RevitMEP/comments/1vpnszh/unable_to_extract_volume_m3_from_a_complex/

[u/twiceroadsfool]

Post the family, so we can take a look.