UPPER AND LOWER MIDDLE ROOF
•Cut the roof into (4) pieces
•Make a horizontal cut and save the upper roof.
•Be sure to preserve the lip of the upper roof.
•Cut the remaining section into three segments.
•The cut should be at  or just inside the surface for the clerestory windows.
•Discard the lower center section of roof.
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UPPER AND LOWER MIDDLE ROOF

These cross-sections show how to cut the roof into (4) pieces.

Make a horizontal cut and save the upper center roof section.
Be sure to preserve the lip of the upper roof.

Cut the remaining section into three segments.
Cutting the lower roof sections inside the clerestory surface leaves a small shelf
    on which the bottom of the clerestory window panel will rest.

The outer sections are the lower side roof sections.
The center section will be discarded.