The highest level in the project is selected by default.
Roof by extrusion.
Click architecture tab build panel roof drop down roof by extrusion.
We also need to use a refrence plane upopn which we can sketch the side profile for our extrusion.
Creates a roof by extruding a profile that you sketch.
In the roof reference level and offset dialog select a value for level.
Display an elevation 3d or section view.
Elevation of section you can select a reference plane to sketch your profile on as long as you have a named one in your model.
So first of all let s go ahead and create our reference plan.
Key points the roof by extrusion tool is used to create wave form type roofs you create a sketch of the upper profile of your roof in a side view i e.