Curved room bounding

Hi to all,
I’m trying to find a solution to extract room bounding elements in a tunnel. I thought that creating a kind of directshape element of a specific category, could be a solution.
It seams that the room is not getting the upper boundary…any idea?


Couple of questions:
Is the Wall of the tunnel a Room bounding element? (Check Category)
Are Volume Computations in Revit set?
Is the Room offset from Level correct?


I guess I solved the issue and, I’ll try to publish the solution…

@Cesare_Caoduro3 Now I’m also facing the Same Problem. did you solved it???