Calculate the rafter length for a sloped roof from the run, pitch, and overhang. Determines the total rafter length needed for cutting.
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Horizontal run of the rafter.
Roof pitch as rise per 12 inches.
Tail overhang beyond the wall.
How this calculator works
Rafter length equals the run times the pitch factor (hypotenuse of rise/run triangle) plus the tail overhang.
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