Hello, I'm creating a family and wanted to see is it possible to add constraints to a void? The main object extrusion has Length, Width, and Height parameter but when I adjust the Height param where the void is at it throw an error. Any help will be appreciated. Thank you ![]()
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Yes you can constrain void extrusions either using parameter, locked measurement strings or by locking to reference planes
What error / prompt message are you getting?
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I'm getting Constraints are not satisfied. Let me see if i can upload the rfa.
Here it is, when i adjust the height param is when it goes wonky.
I can't remodel it at the moment but I see that the void and eventually all the arrayed elements are not locked/constrained to anything
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I followed your steps and ran into the same issue. I even tried it on one void to make sure.
My suggestion would be to Name the very bottom Ref. Plane and make it the Voids' zero start origin (a.k.a. "Extrusion Start") and then control the void height via its "Extrusion End". You can associate the Voids' "Extrusion End" parameter to a Host Parameter in the Family Types dialog box.
@Jes_Gonzalez wrote:I followed your steps and ran into the same issue. I even tried it on one void to make sure.
This is a pretty common error with Arrays. It has nothing to do with the Void.
When you are arraying in family editor (void or solid forms) best is to nest them...when you array a void in a family, first thing Revit 2020 prompts you to do (the below)….the reason is because when you nest the family you are able to constrain it more efficiently at the beginning and the end of the array (First and Last element of the group)
Apart from the void,
To sum all up, when you manage to fix something in this family another thing breaks...I recommend you rebuild it using nested families
As much as people had headaches from arrays ... Autodesk was so kind to give them a prompt
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Came across this post looking for solution, but found it myself while modelling - watch for what is aligned when selecting geometry from the nested family - it has to be reference plane, not the shape reference.
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