If you try to add a roof on the lowest level a dialog prompts you to move it to a higher level.
Roof plans in revit.
About plan regions to define multiple cut planes within a plan view use plan regions.
There are many situations when you need to show the outline or boundary of overhead elements on your plan views.
Display a floor plan view or a reflected ceiling plan view.
About plan views in a 2d view display a floor plan a reflected ceiling plan or structural plan.
About the view range the view range is a set of horizontal planes that control the visibility and display of objects in a plan view.
In the view properties expand the underlay drop down and select the level on which the roof was created to display.
Select the linework tool in the view panel.
How do you make roof lines visible in floor plans revit 1.
Creates a roof using the building footprint to define its boundaries.
Open the plan view of the level in which you want to see the roof line.