Hip Roof Unequal Pitch

62 is shown the manner in which the method represented in fig.

Hip roof unequal pitch.

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. All formulae are below the calculator. The most common parameter is to maintain an equal ridge height over building sections with differing spans. Value must be greater than zero.

Slope of hip end roof. Major side plan angle. Repeat the process on the adjacent pitch side of the hip rafter using adjacent hr miter line shift dimension tail of hr 1 in. Blind valleys simplify framing 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.

For example in an equal hip roof with an 8 12 pitch the pitch of the hip rafter would be 8 17. One of users asked us to create calculator which will help him estimate hip roof parameters like rafter s lengths roof rise and roof area. Minor side roof pitch minor. Major side roof pitch major.

To maintain a consistant ridge height in these situations the roof pitch must be adjusted. But here it will be different since the hip rafter doesn t lie at 45 degrees to the commons. Major side roof span building width ridge thickness 2. Select the following information by using the drop downs to enter values in feet and inches.

58 may be varied to meet the requirements of roofs of unequal pitches. Use the main hr miter line shift dimension tail of hr 1 5 16 in to draw a line parallel with the hr miter line. Draw the line a b in length equal to the runs of the common rafters on both the long and short sides of the hips. Although uncommon there are situations where architectural parameters require off angle hip and valley roof construction.