Roof Pitch Angle Formula

Roof pitch is the measurement of roof steepness.

Roof pitch angle formula.

The way pitch also known as roof slope is measured is rise over run. In civil engineering the slope is the numerical measure of the steepness of a roof. The pitch of a roof is arrived at by dividing the vertical rise and its horizontal span or what people in the roofing industry would refer to as the slope. Roof slope is also called as roof pitch.

Pitch angle incline slope they all can be used to refer to the steepness of a roof. In the imperial unit of measurements the slope is expressed with the rise and run. So if your roof rises 4 inches for every 12 inches of horizontal length then the pitch of your roof is expressed as 4 12. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio.

Notice that angle a is the slope of the roof from horizontal the angle of the plumb cuts and the angle to set your saw when cutting gable studs for instance. So the formula for percent of slope is rise run x 100 percent of slope. A ratio is the most common way of expressing roof pitch or roof slope but degrees are also possible. Pitch tan angle use this when you express the angle of the roof pitch in degrees what is the standard pitch of a roof.

You can convert the slope from ratio to degree using a conversion chart or by entering tan 1 displaystyle 1 rise run into a calculator then convert the answer from decimals to degrees. Roof pitch in layman s language simply refers to the steepness of the roof. If you want to find the roof pitch in the form of x 12 simply calculate the pitch and substitute 12 for the run length. By slope angle formula steepness can be obtained by dividing vertical rise by horizontal span.

Image 1 12 to 12 12 roof pitch. Enter any pitch or fraction of pitch to find angle. This is the angle between the roof and a horizontal line. Pitch tan angle where angle is the roof pitch expressed in degrees.

In the roofing trade the go to term is pitch and it is expressed in terms of 12 inches so the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally. Enter any angle or fraction of angle to find pitch. Just a quick note here rise divided by the run is also how we figure percent of slope.