Counting wall cladding external and internal corners

Hi RVTing, welcome to the forum :wave:
Please review the forum FAQ here How to get help on the Dynamo forums

So you have two problems here

  • How to get all the wall joints of walls with the same external finish (possible to have different types with the same external finish).
    Clockwork have a node that can get the compound structure information like materials
    Then grab all the walls and check their joins and if they are connected to a wall with the same material

  • How to check if the external face wall angle is ‘internal’ concave (0 - 180 degrees) or ‘external’ convex 180 - 360 degrees.
    This can be done by using the wall orientation (External facing normal vector) and a vector of the walls location difference (see here c# - Is this Edge of a 3D solid Concave or Convex? - Stack Overflow)

I think what you are trying to do here is fairly advanced - is this just for one project or will it be used on many?

Anyway - have a go and come back to the forum when you get stuck