How many rafters are needed for a house with a gable roof that measures 44′ x 36′. The rafters are spaced 20″ O.C. and the roof has a 3′ overhang on all sides.

How many rafters are needed for a house with a gable roof that measures 44′ x 36′. The rafters are spaced 20″ O.C. and the roof has a 3′ overhang on all sides.