Elliptical sloped roof in Revit

[musjer380222]

Hi, I'm using Revit 2014 Student version and have problem with creating elliptical roof. If I wanted it to be flat, it wouldn't be a problem. But I need it to be lower near the center of ellipse and higher at outer edge of this elliptical "ring". As you probably know, this "ring" doesn't have constant witdh, as it's elliptical. So I can't just define 30 degrees slope, because height at outer edge would be diffrent in every part. See attachments to understand me.

[VCDwhiz]

Do you need it to look like an inverted elliptical cone?

[Limbatus]

use conceptual mass editor or an in place mass family. revolve an ellipse, and use a void mass to cut off as much as you don't need. use the massing tools to pick roofs by face. voila! ellipse roof. hope it works out for you.