Steel Members to Angled Reference Plane


I have been working with Dynamo to generate a simple structure with columns at grid intersection points with vertical steel members at the start and end points of the columns.

I am somewhat new to Dynamo so was wondering if it is possible to use an angled reference plane at a 3 degree angle that the vertical steel members could then be referenced to within the script rather than a level? I have included a snapshot of the vertical member script and an image of the product. 2021-05-11T04:00:00Z

I use reference planes a lot in my design and I would like to find a way to build this into my script.

Thank you,