To convert between american roofing ratios and pitch degrees follow these steps.
How many degrees is a 1512 roof pitch.
The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72.
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.
However if you to do the process using your own knowledge you can still convert pitch to degrees by dividing the rise and run and get its corresponding measurement.
Find the inverse tangent of the pitch to find the angle in degrees.
Since a 12 12 roof pitch is 45 degrees why isn 39 t a 6 12 roof pitch half of that 22 5 degrees.
On my roof chart and construction calculator a 5 12 roof pitch is 22 5 degrees.
If you are looking at a roof plan for your home or business very rarely will it list the roof pitch in degrees instead it lists the rise and the run of the roof.
The following diagram will let you easily convert 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.
To see roof pitch visual examples how to determine pitch.
After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually.
Look at the column labeled pitch then look under degrees to get the corresponding amount of degrees.
This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.
A 12 12 pitch roof has a pitch angle of 45.
The table below shows common roof pitches and the equivalent grade degrees and radians for each.
8 12 pitch 33 75 degrees.
Roof pitch to degrees equivalents this drawing demonstrates how many degrees rise for each pitch of a typical roof.
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 6 12 pitch is equal to 26 57 degrees.
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.
This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
Divide the first part of the ratio by 12 to work out the pitch.