Roof Slope Factor Degrees

Divide its rise by run in.

Roof slope factor degrees.

The rise will be equal to the amount of the incline within the given distance or the run 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. For example if the roof pitch is 45 then sec 45 1 414213. Locate its tangent or tan and follow the left row for you to read its corresponding degree.

Last updated july 10 2020 the following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. If you know the roof pitch in degrees find the secant of the slope using a scientific calculator. Similarly grades and angles can be calculated for the actual pitch using the roof pitch factor formula. Identify the rise and run.

The angle for 6 12 is 26 57 and in grades it is described as 50. Look at the column labeled pitch then look under degrees to get the corresponding amount of degrees. That s your roof pitch multiplier. Then you ll be able to measure slope from an unfinished attic space under the roof.

To obtain an accurate roof pitch measurement properly measure the rise and run. 8 12 pitch 33 75 degrees. Although there s isn t any standard pitch of a roof used on all kinds of sloped roofs you can determine the range of pitches by using a roof angle calculator and by considering factors like the local climate and roofing materials. As 6 is half of 12 it is considered to be 50.

Roof pitch and corresponding angles. Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level. Enter 6 into the calculator slope factor 1 1180 multiply the roof length by the gable wall length 40 24 960 multiply this amount by the slope factor 960 1 1180 1073 28 the area of this roof 1073 3 sq. Roof pitch to degrees equivalents this drawing demonstrates how many degrees rise for each pitch of a typical roof.

Feet the area of a hip roof equals the area of a gable roof with the same dimensions. For help converting any slope from one way of expressing it to another see roof slope expressed as rise in run degrees and percentage. Other than the 45 roof slope which is 12 in 12 none of the standard roof pitches 5 in 12 6 in 12 etc are equal to a whole degree. Determine its angle through taking a 12 inch level and.

Grades are the measure of percentage. Factor charts you could calculate the slope factor for every single roof pitch but as a public service many roofing companies provide slope factor charts.