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 final tutorial shows how to take the Karamba structural model and import it into Revit again using Geometry Gym in IFC formats. You can download Geometry Gym from here.
The first tutorial explains how to export and prepare geometry to be exported into Rhino & Grasshopper from Revit and Dynamo. See Tutorial 1 – Export a Gable Truss Structure from Revit. 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.