Hi,
I’m trying to create a way (either a table to a highlight) which shows the total number of internal corner junctions and external corner junctions for wall cladding. I am using Revit 2026.
I have different wall types so the junction would ideally show something like “horizontal weatherboards - vertical weatherboards, internal corner = 3 external corners = 2 … etc”
This is how my walls are built.
Hi RVTing, welcome to the forum 
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
Thanks Mike,
This is for many projects, i’m not very competent with Dynamo but was hoping someones done this or something similar where minor tweeks can be done.
No answers, beyond this is doable, but 8 would be doing you a disservice if I didn’t point out this is a difficult ‘new user’ graph and will likely entail going into some parts of the API which are rarely accessed by most. As such it is unlikely to get someone to provide a solution when you aren’t providing even a dataset to build off of. The ask right now is to build a model using screenshots of your wall type and your Revit version, then build a graph, then post the graph and hope it works for your model…
Some questions:
How many external walls will the many projects have?
Is all elements of category the right first step or should it be all elements of type?
Can we filter types by ‘is exterior’?
Do you have the material in interior spaces as well?
Do you care if so or is that a separate count?
Are there many wall types for each finish, or one wall type with painted material?
Are the material types more important than the wall type?
Does the material type vary across projects?
Is this a ‘reuse the model’ situation or a ‘many unique models’ situation?
If it is a reuse model, wouldn’t QA processes on the model (have to happen even if you automate) indicate ‘count them all once and just add a parameter to the project parameters’ solution?
What have you tried so far?
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