Passing Rhino data to Revit can be a challenge. I hear lots of stories from folks who have started a project in Rhino and need to migrate the design into a Revit for a more developed building description, and find a number of problems including, but not limited to: clunky giant SAT imports, cumbersome model rebuild, difficulty with late changes, etc. There is a four part series that the most excellent Joe Kendsersky wrote here a few years ago that has been pretty effective for engaging in that process. Today I want to show a more evolved way of passing information from the .3dm file format to .rvt using a great Dynamo package called Rhynamo, developed by Nate Miller and the folks at Case.
Source