Unequal Hip Roof Framing

Select the following information by using the drop downs to enter values in feet and inches. Not infrequently a roof must be framed in which several pitches are involved. 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.

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First of all you need to design the layout of building.

Unequal hip roof framing.

Hip and valley roof framing is no so complex as compared to hip roof framing procedures. 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. 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.

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. It is advisable to prepare a framing plan as shown in fig. Now draw the centerlines for all rectangles that are formed inside. 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.

90 00 37 32054 52 67946. Framing a roof of uneven pitch. All of the principles necessary for framing such a roof have been developed. The hips are in red common rafters yellow and for hips to work on a square roof like above each member is equal.

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. It remains for the student to make the applications to uneven pitches. Framing a roof of uneven pitch. Now outline the biggest rectangle inside the building layout.