In Revit 2009, the property panel of a wall looks something like shown below.
The Instance parameter "Structural Usage" (in green) is available in wall schedules, and also it is very important in determining the visibility of the element in function of the instance View parameter "Discipline". This means that if you set your view discipline to "structural" only structural elements will be shown, and walls whose "Structural Usage" is NOT set to "Non-bearing".
The type parameter "Wall Function", on the other hand (in orange), is NOT available in wall schedules (nor view filters), and therefore the meaning of its existence becomes much more obscure to me.
Does anyone know why we cannot use this parameter, which becomes vital in defining Core&Shell Vs. Interiors, for example? I guess this is a question / wish list for the foundry...
One really cool feature of the schedule editor is the capability to cross-reference parameters from other categories than the one you are scheduling. For example, if you are doing a door schedule, you can click on the "Select available fields from:" pull-down menu, in the "Fields" tab, and chose "From Room" or "To Room". For other type of schedules, you can access the material parameters of the scheduled elements in the same way.
Now, wouldn't it be absolutely wonderful if the Factory would expand on that principle, and make, I don't know, the door HOST category available? That would be Walls, would it not? Then, we could include in the door schedule partition types, thickness, wall rating (!), wall function (interior/exterior), etc., etc.
Interestingly enough, I just find this post on the Revit Clinic blog, which at least addresses how you can schedule the thickness of the host wall in a door schedule, using a reporting parameter. But it needs to be a shared parameter...
About the Author
Giovanni Succi is a project designer living and working in San Francisco. He is a LEED AP, and for the last twenty years he has been researching the field of computer graphics, 3D modeling, rendering, and architectural design.
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