Unequal Pitch Hip Roof Framing

It remains for the student to make the applications to uneven pitches.

Unequal pitch hip roof framing.

The pitch of the unequal hip rafter can be expressed in relation to either the main roof or the secondary roof. The hip roof has four sloping sides. Framing a roof of uneven pitch. Framing a roof of uneven pitch.

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. Find the hip s unit run as in figure 3b. 90 00 37 32054 52 67946. The most common parameter is to maintain an equal ridge height over building sections with differing spans.

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. 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. 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. Mark 3 perpendicular lines on the top edge of the hip rafter using these dimensions.

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. Blind valleys simplify framing. Not infrequently a roof must be framed in which several pitches are involved.

These hip rafters run at a 45 angle from each corner of the building to the ridge. Overview although uncommon there are situations where architectural parameters require off angle hip and valley roof construction. To maintain a consistant ridge height in these situations the roof pitch must be adjusted. 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.

Next click on the hip angles button and then click on the hip valley rafter slope angle text. A disadvantage of the hip roof is that it is more difficult to construct than a gable roof. It is advisable to prepare a framing plan as shown in fig.