How Do You Figure Pitch Of A Roof

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

How do you figure pitch of a roof.

One method to find the pitch is to climb on the roof and measure the rise for a 12 run. Check the surface of the. For a roof with the ridge above one wall the span is the same as the run. Even if you want to use a flat roof pitch calculator system you will be able to find one.

Take a measurement of 12 inches using a level. Pitch is the incline of the roof represented as the ratio of rise to the span twice the run. Take the measurement of the vertical. Before taking any measurements you must first confirm that it s safe to walk on your roof.

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. Measure the rise of your roof. 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.

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. Roof slope calculator example of use. Measure the run length it is the horizontal distance between the roof ridge and the wall of the building. If your roof pitch is greater than 3 your roof is considered pitched.

The slope is the same as the pitch. First measure 12 inches from one end of the level and make a mark. Read more about roof pitch at wikipedia. 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.

Let s say it is equal to 1 5 m. Calculate the rafter length substituting these values. 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. Let s assume it is equal to 6 m.

Position your level against the roof until the bubble of the vial sits between two lines. For more complex roofs you may need to calculate it section by. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally.