Hip Rafters With Different Roof Pitches

In a hip roof with equal pitches the unit run of a hip or valley rafter is 17 inches for every 12 inches of run in the main roof.

Hip rafters with different roof pitches. From simple to very complex computer generated hip roof designs. Explore framing complexities that result when roofs of two different pitches intersect. While the slope of the common rafters are expressed as x in 12 the slope of the hip and valley rafter on the same roof will be x in 16 97 so where two roof sections intersect to form a 90 angle a regular hip or valley and each roof. The only method that is 100 foolproof to find the values for all jack rafters no matter what the pitch or even if they are on different pitches is to physically measure the long rafter and the short rafter and then divide the difference by the number of spaces.

Learn more about off angle roof framing. Select the following information by using the drop downs to enter values in feet and inches. This calculator returns the first 16. 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.

For example in an equal hip roof with an 8 12 pitch the pitch of the hip rafter would be 8 17. 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. On a related note the pitch properly the slope of a hip or valley rafter will not be the same as the pitch of the adjacent roof sections. A hip roof or a hipped roof is a style of roofing that slopes downwards from all sides to the walls and hence has no vertical sides.

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. Discover 5 types of hip roofs plus 22 examples of many houses that incorporate all the different hipped roof styles. Blind valleys simplify framing. A sketchup model helps clarify how various rafters and framing components are assembled in an off angle hip and valley configuration.

But here it will be different since the hip rafter doesn t lie at 45 degrees to the commons.