Unequal Pitch Hip Roof Framing

These hip rafters run at a 45 angle from each corner of the building to the ridge.

Unequal pitch hip roof framing.

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. Blind valleys simplify framing. It will display the framing square usage for the slope angle of the hip rafter 27 50055 6 12. Next click on the hip angles button and then click on the hip valley rafter slope angle text.

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. Framing a roof of uneven pitch. Since you need only one set of numbers to lay out the cuts let s work with the main roof which has a unit rise of 8 inches. Not infrequently a roof must be framed in which several pitches are involved.

It remains for the student to make the applications to uneven pitches. Using a pitch measuring tool that i d made we also determined that the exact pitch of the shed roof was 3 1 2 in 12. The hip roof has four sloping sides. It is advisable to prepare a framing plan as shown in fig.

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 most common parameter is to maintain an equal ridge height over building sections with differing spans. Find the hip s unit run as in figure 3b. Framing a roof of uneven pitch.

90 00 37 32054 52 67946. To maintain a consistant ridge height in these situations the roof pitch must be adjusted. Overview although uncommon there are situations where architectural parameters require off angle hip and valley roof construction. Select the following information by using the drop downs to enter values in feet and inches.

All of the principles necessary for framing such a roof have been developed. It is the strongest type of roof because it is braced by four hip rafters. The pitch of the unequal hip rafter can be expressed in relation to either the main roof or the secondary roof.