How To Figure Roof Pitch Angles

Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.

How to figure roof pitch angles.

Finally enter the value of the rafter length and. This is our pitch calculator which will convert pitch to angle or angle to pitch for half degree roof slope calculations. Total height of building. So if your roof is a 45 degree angle that is for every 12 along the horizontal run it rises 12 it s a 12 12 pitch.

First enter the value of the rise and choose the unit of measurement from the drop down menu. Angle arctan pitch arctan 0 354 19 5 a n g l e a r c t a n p i t c h a r c t a n 0 354 19 5. Roof pitch is a term describing how steep or flat your roof slope is. Then enter the value of the run and choose the unit of measurement from the drop down menu.

Enter any pitch or fraction of pitch to find angle. The combination of two numbers are used to display or show the roof pitch. For many people working out the roof pitch angles can be a bit of a nightmare especially if you are going to do it yourself and try to manage it all on your own. Therefore the pitch of your roof is 4 2 12.

If you plan to have overhang etc. Pitch rise run 1 5 6 25. The rafter member will be longer. You can also calculate the pitch angle.

Finally you can find the roof pitch in the form of x 12. For example if the roof rises 4 feet and the span is 16 feet twice the run then the pitch is 4 16 or 1 4. If it rises only 6 for every 12 it s a 6 12 pitch. And lastly calculate the grade.

Here are the steps to follow for the roof angle calculator. Grade 100 pitch 100 354 35 4 g r a d e 100 p i t c h 100 354 35 4. The traditional method has been rise inches 12 run inches. Enter any angle or fraction of angle to find pitch.

Angle arctan pitch arctan 0 25 14. Rafter rise run 1 5 6 2 25 36 38 25rafter 38 25 6 18 m. Calculate the roof pitch as the proportion of rise and run. Roof pitch angle and slope factor charts.

Naturally this does not go down particularly well without the right tools knowledge and assistance.