Roof Pitch and Corresponding Angles Roof Pitch (slope) Roof Angle (degree) 6:12 Pitch 26.57° 7:12 Pitch 30.26° 8:12 Pitch 33.69° 9:12 Pitch 36.87° Click to see full answer. Just so, what is the angle of a 3/12 pitch roof? Roof Pitch Pitch Angle Multiply By 3/12 14.0° 1.031 5/12 22.6° 1.083 7/12 30.3° 1.158 9/12 36.9° 1.250 Secondly, what angle is a 8/12 pitch? 8/12 roof pitch angle = 33.69 degrees. Also question is, how do you determine the pitch of a roof in degrees? If you know the angle of the roof in degrees you can find the roof pitch by converting the angle in degrees to a slope, then finding the rise by multiplying the slope by 12. First, find the slope by finding the tangent of the degrees, eg. slope = tan(degrees). Then multiply the slope by 12 to get the rise.How is pitch calculated?The angle, or pitch, of a roof is calculated by the number of inches it rises vertically for every 12 inches it extends horizontally. For example, a roof that rises 6 inches for every 12 inches of horizontal run has a 6-in-12 pitch.

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