A 30 roof pitch is roughly the same as a 7 12 roof pitch.
How do i get the pitch of a roof.
Then enter the value of the run and choose the unit of measurement from the drop down menu.
If you do need to calculate the pitch an estimate or shortcut is usually more practical than measuring the roof s overall dimensions.
Find the tangent of the angle tan angle.
Enter any pitch or fraction of pitch to find angle.
From the attic hold a level perfectly level and touching a rafter at one end.
Here are a couple examples.
Enter any angle or fraction of angle to find pitch.
Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level.
Another method to find the roof pitch is to go into the attic and measure the rise for a 12 run of the roof rafters which allows finding the pitch without going on the roof.
First measure 12 inches from one end of the level and make a mark.
This gives you the pitch of the roof.
To convert from degrees to the american ratio.
Finally enter the value of the rafter length and.
How to measure roof pitch.
Divide the slope by two to get the pitch.
First enter the value of the rise and choose the unit of measurement from the drop down menu.
Here are the steps to follow for the roof angle calculator.