Here is my solution to the question as I understand it. See image.
This also this brings up another issue about Beam Orientation in Revit. Also see this image as well as an image of how to do Beam orientation using Adaptive Components and Rhino.Inside.Revit taken directly from the Dynamo and Grasshopper Cheat Sheet Reference Manual where there are 100’s of GH for Revit Examples. If you want to check it out click here https://www.aeccheatsheets.com/dynamo-and-grasshopper-reference-ma
