1 12 Roof Pitch Degrees

Last updated july 10 2020 the following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.

1 12 roof pitch degrees.

Roof pitch angle roof pitch multiplier 1 12 4 76 1 0035 2 12 9 46 1 0138 3 12 14 04 1 0308 4 12 18 43 1 0541 5 12 22 62 1 0833. A pitch over 9 12 is considered a. Roof pitch and corresponding angles. Other than the 45 roof slope which is 12 in 12 none of the standard roof pitches 5 in 12 6 in 12 etc are equal to a whole degree.

Select inches to enter decimal inches or millimeters for metric. Directly measure roof pitch angle and calculate pitch and angle on phone or tablet. Roof pitch degree table. What is a 1 12 roof pitch if a roof rises 1 in a length of 12 this is 1 12 roof pitch.

Locate its tangent or tan and follow the left row for you to read its corresponding degree. Divide the first part of the ratio by 12 to work out the pitch. Most roof s have a pitch in the 4 12 to 9 12 range. 1 12 roof pitch angle 4 76 degrees.

A 12 12 pitch roof has a pitch angle of 45. The 12 inch run is considered standard in roof pitch or angle terminologies. Find the inverse tangent of the pitch to find the angle in degrees. A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind.

For this you can take help from roof pitch factor chart. 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. Lower slopes don t handle wind driven rain as well. Image 1 12 to 12 12 roof pitch 7 12 pitch.

If a roof or ramp rises 4 in a length of 12 the pitch is 4 in 12 which is 18 43 or 33 33 grade enter base length to calculate rise and diagonal for current pitch angle. Steeper slopes increase the sail effect that makes them susceptible to wind. What roof angle in degrees. So use the 12 inch level as a constant run and 18 inch ruler as a variable rise.

To convert between american roofing ratios and pitch degrees follow these steps.