When using Revit Levels, we can create levels with floor plan views, or we can create levels that do not have floor plans associated with them. These are usually used when you want to constrain or lock elements to the “dead” level, but do not need the floor plan. This could be a T.O. Steel level, or some other level for coordination. Live levels are shown with blue datum, while dead levels are shown as black datums.
Don't delete those dead levels! Here are two reasons. First, if the dead level has objects constrained to them, there is a good chance that item will be deleted along with the level. Secondly, dead levels can be converted to a live level with a floor plan associated with them. "How," you ask?... That will have to wait until I see you in class.