7 Best Of How To Calculate A Gambrel Roof Best Images PNG. Inches Enter the pitch of the upper roof rise 12 Enter the pitch of the lower roof. Feetinches Enter the width of the building.
Instructions Enter the length of the building. This piece of plywood represents the dimensions for your roof and will serve as an assembly site for your rafters. Draw a semi-circle on the graph paper mark a center peak at the top and draw two lines on each side in the shape desired for the gambrel roof.
Inches Enter the pitch of the upper roof rise 12 Enter the pitch of the lower roof.
This piece of plywood represents the dimensions for your roof and will serve as an assembly site for your rafters. With overhang selected drag slider to increment - decrement. Inches Enter the overhang of the gable. Inches Enter the overhang of the gable.