Curved & sloping roof

[Robert_DeFranco]

Hello everyone, I'm hoping that someone might have a solution to my problem. I have a roof that is sloping from front to back, but the front and back of the roof also follow the arcs of two curving walls. Does anyone have a solution for the best way of creating this roof. I've attached a file showing the roof (shown in blue). Any help is greatly appreciated, thanks.

[RobG]

draw the outline of the roof, then remove the slope on the 2 sides and the back edge.

[dhurtubise]

Use a massing family.
Create an arc for the path and the slope to create a shape.
I included an example.