Valley Angle Between 2 Different Roof Slopes

Expressing the same thing using degrees.

Valley angle between 2 different roof slopes.

Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. A sketchup model helps clarify how various rafters and framing components are assembled in an off angle hip and valley configuration. Explore framing complexities that result when roofs of two different pitches intersect. This slope and skew calculator makes it easy by performing all of the necessary trigonometry for each hanger condition in the roof.

Determining the slope and skew angles related to hip and valley beams can be a challenge made even more difficult when the roof slopes on each side if the hip or valley are different. When the widths of the major and minor roofs are equal two valley rafters of equal length. 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. The combination of two numbers are used to display or show the roof pitch.

Slope and skew calculator. The roof sections in the above example have a 26 57 slope while the hip or. On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length. Unit run of the hip.

Draw a diagonal line between 9 feet the run of the main roof on the tongue of the square and 7 feet 6 inches the secondary roof run on the blade. So where two roof sections intersect to form a 90 angle a regular hip or valley and each roof section has for example a 6 in 12 slope the hip or valley rafter at that intersection will have a slope of 6 in 16 97. The blind valley roof can be used to calculate valleys for roofs with unequal slopes. Learn more about off angle roof framing.