Unequal Pitch Hip Roof Framing

Blind valleys simplify framing.

Unequal pitch hip roof framing.

Next click on the hip angles button and then click on the hip valley rafter slope angle text. The hip roof has four sloping sides. These hip rafters run at a 45 angle from each corner of the building to the ridge. Mark 3 perpendicular lines on the top edge of the hip rafter using these dimensions.

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. All of the principles necessary for framing such a roof have been developed. 90 00 37 32054 52 67946. Find the hip s unit run as in figure 3b.

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. A disadvantage of the hip roof is that it is more difficult to construct than a gable roof. It is the strongest type of roof because it is braced by four hip rafters. 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.

Framing a roof of uneven pitch. Framing a roof of uneven pitch. The pitch of the unequal hip rafter can be expressed in relation to either the main roof or the secondary roof. Overview although uncommon there are situations where architectural parameters require off angle hip and valley roof construction.

To keep the porch roof framing as simple as possible we installed a structural ridge supported by posts at each end with the common rafters landing on top of the ridge. To maintain a consistant ridge height in these situations the roof pitch must be adjusted. It will display the framing square usage for the slope angle of the hip rafter 27 50055 6 12. Not infrequently a roof must be framed in which several pitches are involved.

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. It is advisable to prepare a framing plan as shown in fig. Select the following information by using the drop downs to enter values in feet and inches.