Is a Revit ʼCompound Wallʼ made of multiple layers?
Short Answer
Yes. In Autodesk Revit, a Compound Wall is typically made of multiple layers defined in the wall type’s structure, such as finish, substrate, core, and membrane layers. The standard professional method is editing the wall type with Edit Type and then Structure. Limitation: stacked walls and curtain walls do not use compound layers the same way.
What You Need to Know Before
Warning: Editing a wall’s compound structure usually changes every instance of that wall type in the project. A common failure is modifying a type in use across many views and details, which can unexpectedly alter core thickness, joins, tags, and hosted elements.
How to…
Command: Edit Type
Shortcut: None
Quick Steps:
- Select the wall, then go to the Properties palette and click Edit Type.
- In Type Properties, find Structure and click Edit in the Construction section.
- In the Edit Assembly dialog, add, remove, or reorder layers, then set functions like Core Boundary, Material, and Thickness before clicking OK.
Variables & Settings
Key Setting: Structure > Edit Assembly
Expert Setting: The Preview option in the Edit Assembly dialog helps verify which layers are inside or outside, while Wraps settings control whether finish layers wrap at inserts or ends. Incorrect core boundaries can affect wall joins, dimension references, and detail representation.
Why it Fails
- Cause 1 (Geometry): The wall may be a basic wall with incorrect layer order or zero-thickness layers, causing display or join issues.
- Cause 2 (Layers/Locks): The wall type may be used widely in the model, so changing its layers affects many placed instances and hosted components.
- Cause 3 (Command/Logic): Users often edit the instance instead of the type; compound layers are controlled at the type level, not per-instance in standard wall workflows.
Quick Fix & Best Practice
- Quick Fix: Use Edit Type first, then Duplicate the wall type before changing Structure so existing walls are not disrupted.
- Manager’s Verdict: Use compound walls for standard construction assemblies with accurate material and core control. Avoid editing live production types directly unless you know every instance that will be affected.
FAQ
Can I change one layer thickness in a Revit compound wall?
Yes, edit the wall type’s Structure and change that layer’s thickness.
Do all Revit walls have compound layers?
No, basic walls typically do, but curtain walls and stacked walls behave differently.
Can I assign different materials to each wall layer?
Yes, each layer in the compound structure can have its own material.
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