Hip Roof Unequal Pitch

Minor side roof pitch minor.

Hip roof unequal pitch. 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. To get results you need to provide roof base dimensions length and width and roof pitch we assume it is identical for all sides. 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. Value must be greater than zero.

The most common parameter is to maintain an equal ridge height over building sections with differing spans. Slope of hip end roof. But here it will be different since the hip rafter doesn t lie at 45 degrees to the commons. Major side roof pitch major.

62 is shown the manner in which the method represented in fig. Repeat the process on the adjacent pitch side of the hip rafter using adjacent hr miter line shift dimension tail of hr 1 in. All formulae are below the calculator. Major side plan angle.

For example in an equal hip roof with an 8 12 pitch the pitch of the hip rafter would be 8 17. The pitch of the unequal hip rafter can be expressed in relation to either the main roof or the secondary roof. 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. Select the following information by using the drop downs to enter values in feet and inches.

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. 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. Major side roof span building width ridge thickness 2.