Remove all shape edits to your surfaces by means of the reset shape tool.
Create a floor in revit.
As you place the cursor to create a level if the.
Architecture tabdatum panel level structure tabdatum panel level place the cursor in the drawing area and click.
Add a floor by picking walls to create the boundary.
Once created select the floor element and then use the shape editing tools accordingly.
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The floor boundary must be a closed loop profile.
If it is not active click modify create floor boundary tab draw panel pick walls.
This video was recorded using revit 2020.
Open the section or elevation view to add levels to.
You can use shape editing tools to manipulate the surfaces of your floor elements.
Select walls in the drawing area to use as floor boundaries.
Click view tab create panel plan views drop down and then click floor plan reflected ceiling plan structural plan in the new plan dialog.
Edit the floor boundary and use the align and trim tools to create a closed loop sketch.
Create you floors in the normal manner first.
Select one or more levels for which you want to create a plan view.
When performing the procedures you may notice minor differences in functionality and user interface.