Enter the following parameter on the left side of the dialog
box:
Pitch: 35A (= 35°, you can also enter the pitch as a
ratio, for example 1/1.5)
Get the frame height from the building model. Click the
Get button next to the Plate Height field.
You will be prompted: From which window do you
want to select the wall?
You cannot select a wall in the reference drawing, so you must
select a wall in the model window. Click the 3D button.
Click one of the walls on the 1st floor in the model window
(A). The Roof Parameters dialog box reopens. The value in the
Plate Height field is now 2762.