In a four part tutorial, Junghwo Park explains how to export a gable truss structure created in Revit, into Karamba and finally back into Revit again.
The first tutorial explains how to export and prepare geometry to be exported into Rhino & Grasshopper from Revit and Dynamo.
The second and third tutorial takes the exported .dwg file and imports it into Rhino and Grasshopper and then explains how to set up a structural analysis in Karamba. See Tutorial 2 & 3 – Analyze a Gable Truss Structure. The last tutorial shows how to take the Karamba structural model and import it into Revit again using Geometry Gym. See Tutorial 4 – Export a Gable Truss Structure to Revit with Geometry Gym/Rhynamo