Use the Level tool to define a vertical height or story within a building. You create a level for each known story or other needed reference of the building (for example, first floor, top of wall, or bottom of foundation). To add levels, you must be in a 3D view. When you add levels, an associated plan view is created.
Levels are finite horizontal planes that act as a reference for level-hosted elements, such as mass floors. You can resize their extents so that they do not display in certain views. For more information, see .