Roof Pitch 15 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.

Roof pitch 15 degrees.

To see roof pitch visual examples how to determine pitch. A 30 degree roof slope 7 12 pitch is the right pitch to aerodynamically handle high wind. Pitch tan angle where angle is the roof pitch expressed in degrees. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.

If you want to find the roof pitch in the form of x 12 simply calculate the pitch and substitute 12 for the run length. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. Final answer 7 12 30 15 18. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually.

It is important to note that most programmable calculators will have a button on it that will convert decimal degrees to degrees minutes seconds automatically. Now subtract 15 and multiply 3007 x 60 to get 18 seconds. Roof pitch to degrees equivalents this drawing demonstrates how many degrees rise for each pitch of a typical roof. Consider buying my book the roof framers field manual.

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. Steeper slopes increase the sail effect that makes them susceptible to wind. 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. 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.

Look at the column labeled pitch then look under degrees to get the corresponding amount of degrees. 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. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. With the use of this converter it will be easier for you to locate a 30 degree roof pitch 20 degree roof pitch 25 degree roof pitch or a 15 degree roof pitch.

Lower slopes don t handle wind driven rain as well. The value displayed as the rise will be your x. The 30 degree 7 12 roof recommendation is backed up by testing according to the publication science daily.