You create floors by sketching them, either by picking walls or by using the Line tool. Typically, you sketch a floor in a plan view, although you can use a 3D view if the work plane of the 3D view is set to the work plane of a plan view. Floors are offset downward from the level on which they are sketched.
In a conceptual design, you can use floor area faces to analyze masses, and create floors from a mass. For more information, see Analyzing a Conceptual Design and Creating Floors from Mass Floors.
