Unequal Hip Roof Framing

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Unequal hip roof framing.

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. It is advisable to prepare a framing plan as shown in fig. 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. 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.

First of all you need to design the layout of building. It remains for the student to make the applications to uneven pitches. The hips are in red common rafters yellow and for hips to work on a square roof like above each member is equal. Not infrequently a roof must be framed in which several pitches are involved.

Now draw the centerlines for all rectangles that are formed inside. Framing a roof of uneven pitch. 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. All of the principles necessary for framing such a roof have been developed.

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. Where roofs of unequal pitch join it requires careful layout to create equalwidth soffits with equal height fascias. Now outline the biggest rectangle inside the building layout. Framing a roof of uneven pitch.