Open the plan view of the level in which you want to see the roof line.
Revit create roof plan view.
Creating a roof in revit roof by footprint go to your desired plan view to begin modelling you roof.
In the view properties expand the underlay drop down and select the level on which the roof was created to display as an underlay.
Navigate to a suitable elevation view west elevation in the example next go to systems tab pipe draw your desired gutter downpipe run.
But for whatever reason my a dash roof does not exist.
For type select a view type from the list or click edit type to modify an.
If you specify zero segments the default a.
On the properties palette specify a value for number of full segments.
So in order to create that a dash roof plan what i can do is come over here to my view tab click here and then come into my floorplan view.
This view should ideally have been generated from the level that will act as the host or base level for your new roof construction.
Next navigate to the architecture tab roof dropdown roof by footprint as per the image below.
Create a plan view click view tab create panel plan views drop down and then click floor plan reflected ceiling plan structural plan floor plan reflected ceiling plan structural plan in the new plan dialog.
In the drawing area select the arc line.