What size should a hip rafter be?
What size should a hip rafter be? The rule of thumb is that hips, purlins and ridge boards are at least 1.5 times the depth of the rafter. What angle do hip rafters run at? The king common at the end of the ridge and the king common on the side of the ridge intersect at a 90° angle. The hip rafter intersects this 90° angle at a 45° angle and runs diagonally down to the building corner. The king commons at the ends of the ridge are the same length as those at the sides. How do you calculate...