I believe this can only be done if the Walls are on a different plane, high enough above/below where they won't intersect/overlap each other. Basically, you would actually be creating a second, third, fourth story, but it would look the same in Plan View. I hope that isn't too confusing.
John is correct. We place multiple stories on different workplanes and walls don't seem to interact with hidden layers. Have been doing it that way since v8, but Henry is correct also, the walls since v14 do act some different. When creating the workplanes separate them by a large enough Z value so the entities won't touch the hidden ones.
Jon Coxwell, AIA
Windows Win 7x64
TC19,20 32 bit, 20,21,22 64 bit (Platinum)
RedSDK usually off Win 10 pro
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