Roof Slope Pitch Angle

Squaring building lines example 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.

Roof slope pitch angle.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Roof pitch refers to the slope which the rafter creates. To do this simply convert the rise and run as a fraction to a decimal form eg. Roof pitch is a term describing how steep or flat your roof slope is.

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. Roof pitch angle and slope factor charts. 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. This is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares.

This forms an angle of 18 5 between the horizontal section and the roof and creates a gentle incline that is seen as a midpoint between a low pitch and medium pitch roof. First convert the pitch to a slope. Rise run rise run slope. The combination of two numbers are used to display or show the roof pitch.

Often you express roof pitch as the ratio between the rise and the run in the form of x 12. To find the angle of a roof in degrees convert the pitch to a slope then convert to degrees by finding the arc tangent of the slope.