Hip Roof Unequal Pitch

Value must be greater than zero.

Hip roof unequal pitch.

Minor side roof pitch minor. To maintain a consistant ridge height in these situations the roof pitch must be adjusted. 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. For example in an equal hip roof with an 8 12 pitch the pitch of the hip rafter would be 8 17.

Repeat the process on the adjacent pitch side of the hip rafter using adjacent hr miter line shift dimension tail of hr 1 in. To get results you need to provide roof base dimensions length and width and roof pitch we assume it is identical for all sides. 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. Although uncommon there are situations where architectural parameters require off angle hip and valley roof construction.

Major side plan angle. Major side roof pitch major. The most common parameter is to maintain an equal ridge height over building sections with differing spans. The pitch of the unequal hip rafter can be expressed in relation to either the main roof or the secondary roof.

All formulae are below the calculator. 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. 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. But here it will be different since the hip rafter doesn t lie at 45 degrees to the commons.

58 may be varied to meet the requirements of roofs of unequal pitches. Major side roof span building width ridge thickness 2. Slope of hip end roof. 62 is shown the manner in which the method represented in fig.