The information in this article applies to:
The walls in my model are visible in floor plan view and I can select them and open their specification dialog, but when I create 3D camera views, they are not visible. Why aren't my walls visible in these views and how do I correct this?
There are several reasons why walls that are visible in a floor plan view might not be visible in 3D camera views. In X12 and newer, Hide Camera-Facing Exterior Walls could be turned on in your camera view. Another option is that the walls are specified as Invisible in their specification dialogs. A third reason is that the "Walls, Normal" layer is not set to display in 3D views. Finally, it is possible that the ceiling heights of the rooms that the walls are enclosing are set to 0, which prevents the program from generating walls upward.
Floor overviews show the current floor, not including the ceiling, plus any floors beneath it. For example, if you create a floor overview on floor 1, but a floor 2 exists in the plan, the walls on floor 1, along with the content below that floor will display in the 3D view; walls present on any higher floors will not be visible unless you navigate to one of those floors.
Starting in X12, walls facing the camera can be toggled to show or hide in a specific camera view. This allows you to view the interior from the exterior.
You can also reset the floor and ceiling heights of rooms in your plan on a room-by-room basis in the Room Specification dialog; however, Reset to Defaults is a faster and more thorough option.