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Unequal hip roof framing.
The hips are in red common rafters yellow and for hips to work on a square roof like above each member is equal.
Now outline the biggest rectangle inside the building layout.
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.
Select the following information by using the drop downs to enter values in feet and inches.
Here roofs are constructed with an angle of 90 degrees.
Where roofs of unequal pitch join it requires careful layout to create equalwidth soffits with equal height fascias.
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.
Framing a roof of uneven pitch.
It remains for the student to make the applications to uneven pitches.
First of all you need to design the layout of building.
Now draw the centerlines for all rectangles that are formed inside.
Framing a roof of uneven pitch.
Not infrequently a roof must be framed in which several pitches are involved.
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.
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.
