Hi everybody,
I would like to know if I can replace wall foundations by structural framings as a foundation walls.
I know I can insert beams by a curve:
https://forum.dynamobim.com/t/create-lines-in-dynamo-and-convert-to-beams-in-revit/11794
However I don’t know how to get a curve from the center of a Wall or from the center of a Foundation Wall.
Thank you.
Hi 
I think you could use the Element.GetLocation node. That will give you the curve that define a wall (the line you drew on Revit i you will). Also work with beams.
Thank you very much that works!
This solves a part of my problem.
I’m looking for a way to select the Foundation Wall that is hosted on the selected wall. I would like to do that for 3 reasons:
1- Erase the existing Foundation Wall.
2- Get and set the Mark parameter in the new beam.
3- Get the dimension of the Fondation Walls to insert the correct new beam directly. (Perhaps I’m too ambitous 
)
Thank you.
I think archi-lab package has a Element.delete node.
Don’t know how to do the other things you want to do 
