Pitched Roof Slope Angle

Often you express roof pitch as the ratio between the rise and the run in the form of x 12.

Pitched roof slope angle.

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. Roof pitch refers to the slope which the rafter creates. 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. Pitch angle incline slope they all can be used to refer to the steepness of a roof.

Angle the angle of a roof is the same as the roof s slope except instead of being represented as x 12 it is represented in degrees. Thus a 4 12 pitch would be a 33 slope. Roof pitch and corresponding angles. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees.

A 4 12 pitch is around 18 5 degrees but not exactly. This is useful because sometime you may need to cut a bevel with your circular saw that is not calibrated using roof pitch style this setting on circular saws is calibrated in degrees. You can also divide the rise over run multiply by 100 and get a percentage.