Use the Sweep tool to add a baseboard, crown molding, or other type of decorative horizontal or vertical projection to a wall.
 Build panel
Build panel Wall drop-down
Wall drop-down
 (Wall: Sweep).
 (Wall: Sweep). 
 Placement panel, and select the orientation of the wall sweep: Horizontal or Vertical.
Placement panel, and select the orientation of the wall sweep: Horizontal or Vertical. 
Revit preselects the wall sweep location on each adjacent wall.
If you are in a 3D view, you can add a wall sweep to all exterior walls by using the ViewCube to rotate the view.
 Placement panel
Placement panel
 Wall Sweep Restart. Move the cursor to the desired location on the wall, and click to place the wall sweep.
 Wall Sweep Restart. Move the cursor to the desired location on the wall, and click to place the wall sweep. 
