Roof Pitch Conversion Chart

48 10 4 8.

Roof pitch conversion chart.

The pitch of this roof is 4 8 12. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. If this isn t practical then perform the same measurement on the underside of the roof. Use the following formula which also describes a right triangle.

Here are the equations you may use to solve for the length of the slope and the rafter. Usually they come in the form of a roof pitch diagram chart but other times it will be. In essence a roof pitch chart is provided as a rough guide usually by a roofing company to help you see what the average roof pitches tend to be. Since pitch is the rise over a 12 inch run divide the run by 12 to get the multiplier in this case 120 12 10.

Now divide the rise by the multiplier to get the pitch eg. You can also calculate roof pitch even without using a roof slope calculator. What is a roof pitch chart. We included a roof pitch chart below the 7 12 example image and the calculator below that.

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. The combination of two numbers are used to display or show the roof pitch. These charts come in many various names and forms and we will look at how you can use a roof pitch conversion chart to learn about the most effective balance for your home with regard to getting the roof design right.