How Do You Figure Pitch Of A Roof

Pitch is the incline of the roof represented as the ratio of rise to the span twice the run.

How do you figure pitch of a roof.

This will allow your project to carry the depth and detail in the roof that you wanted as well as make sure that it will maintain a sturdy and effective nature throughout. First measure 12 inches from one end of the level and make a mark. For a roof with the ridge above one wall the span is the same as the run. Before taking any measurements you must first confirm that it s safe to walk on your roof.

If your roof pitch is greater than 3 your roof is considered pitched. Let s assume it is equal to 6 m. Measure the run length it is the horizontal distance between the roof ridge and the wall of the building. The roof pitch measures the steepness of your shed roof and typically takes values from 1 to 12.

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. Let s say it is equal to 1 5 m. You ll need a level that is 12 or longer and a tape measure. If you want to know how to find the pitch of a roof then start with a calculator.

Check the surface of the. Even if you want to use a flat roof pitch calculator system you will be able to find one. Position your level against the roof until the bubble of the vial sits between two lines. How to measure roof pitch to measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.

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. Take the measurement of the vertical. Measure the rise of your roof. One method to find the pitch is to climb on the roof and measure the rise for a 12 run.

Calculate the rafter length substituting these values. On the roof hold the level perfectly level and measure the height from the roof to the level 12 inches away from where the level touches the surface this will be the rise. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Roof slope calculator example of use.

Read more about roof pitch at wikipedia. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. The slope is the same as the pitch.