Solid by Loft (Tunnel)

Till now my workaround has been using the “solid difference” node to obtain the Tunnel’s geometry. Is there any way to use a hollow cross-section for the “Solidbyloft” node?

Revit 2018 File (Units m)
TUNNEL.rvt (2.9 MB)

Dynamo 1.3.2 file
Input elements: The section from the Draft view
Dynamo_Tunnel.dyn (32.9 KB)


Could you post your current workflow?

Sorry I was uploading it! it’s there now.