Unequal Hip Roof Framing

It remains for the student to make the applications to uneven pitches.

Unequal hip roof framing.

All of the principles necessary for framing such a roof have been developed. First of all you need to design the layout of building. Drawing a superimposes the common rafters for the two roof pitches and illustrates the problem that occurs when roof layout starts at the outside edge of the exterior walls. If the wall plates are all square of equal lengths then the hipped rafters would form a pyramid shape like the picture above normally a roof is rectangle and there are more yellow common rafters.

Now draw the centerlines for all rectangles that are formed inside. It is advisable to prepare a framing plan as shown in fig. 90 00 37 32054 52 67946. Framing a roof of uneven pitch.

The hip roof framing calculator returns the value of the main rafter the side rafter the length of the hip the height of the knee wall and the lengths of the jack rafters. Hip and valley roof framing is no so complex as compared to hip roof framing procedures. Set your saw blade bevel angle to the 56 30993 to cut the hip rafter tail plumb cut on the 12 12 roof pitch side of the hip rafter. Which is the hip rafter side cut angle at the foot of the hip rafter on the 8 12 roof pitch side of the roof.

The hips are in red common rafters yellow and for hips to work on a square roof like above each member is equal. Where roofs of unequal pitch join it requires careful layout to create equalwidth soffits with equal height fascias. Framing a roof of uneven pitch. Not infrequently a roof must be framed in which several pitches are involved.