Working Out Roof Pitch Metric

For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally.

Working out roof pitch metric.

The slope is the same as the pitch. Divide the slope by two to get the pitch. Roof pitch refers to the slope which the rafter creates. Roof pitch calculator the roof pitch measures the steepness of your shed roof and typically takes values from 1 to 12.

It can also be written down as 25 or 14. Visit this page using a phone or tablet to directly measure pitch and angles. Read more about roof pitch at wikipedia. Pitch is the incline of the roof represented as the ratio of rise to the span twice the run.

X pitch 12 0 25 12 3. You should also be keen on ensuring the pitch measurements you adopt are in line with the basic styles and sizes that experts in the industry tend to rely on. While pitch and slope are used interchangeably they are not the same span also known as gable width this is based on the total footprint of the house and refers to the distance between two exterior walls. The triangle diagram will be re drawn to scale with all dimensions marked.

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. For a roof with the ridge above one wall the span is the same as the run. Pitch this is the incline of the roof expressed as a fraction. Drag sliders to animate the results and diagram.

Angle arctan pitch arctan 0 25 14 finally you can find the roof pitch in the form of x 12. Zoom out to fit large full scale template images on screen or to adjust scale to match. If your roof pitch is greater than 3 your roof is considered pitched. Enter run the flat level length then click pitch angle or rise to select then enter other known dimension angle or pitch.

Calculate the roof pitch as the proportion of rise and run. You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. The pitch of your roof is 3 12.

Naturally this does not go down particularly well without the right tools knowledge and assistance. Pitch rise run 1 5 6 25. Recalculate this value into an angle.