15 Degree Roof Pitch

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.

15 degree roof pitch.

After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. The table below shows common roof pitches and the equivalent grade degrees and radians for each. A 12 12 pitch roof has a pitch angle of 45. Find the inverse tangent of the pitch to find the angle in degrees.

Drag sliders to animate the results and diagram. You have to pay higher cost for steeper pitch. To see roof pitch visual examples how to determine pitch. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

The roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need. A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. To convert between american roofing ratios and pitch degrees follow these steps.

The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. What degree angle is a 12 12 pitch roof. Enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or pitch. Measurement of your house roof pitch is one of the most important things while constructing pitched roof.

The triangle diagram will be re drawn to scale with all dimensions marked. Look at the column labeled pitch then look under degrees to get the corresponding amount of degrees. 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. Lower slopes don t handle wind driven rain as well.

But with the use of a roof pitch in degrees converter you will be able to get the correct measurement. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. 8 12 pitch 33 75 degrees. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.

Divide the first part of the ratio by 12 to work out the pitch.