Roof Slope Conversion Table

Finding the calculations needed to take things a step further with the roof conversion or development is going to take a lot of time and you need to have access to the best charts and software possible.

Roof slope conversion table. Roof pitch is the slope created by the rafter. To obtain an accurate roof pitch measurement properly measure the rise and run. Roof pitch on the form x 12 can be expressed in grades as. You can find the roof pitch in the form of x 12 like 4 12 or 9 12.

Slope as grade for an elevation of 1 m over a distance of 2 m can be calculated as. Then you ll be able to measure slope from an unfinished attic space under the roof. 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. 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.

S grade 1 m 2 m 50 slope and roof pitch. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof.

Finding the best roof slope conversion chart. The table below shows common roof pitches and the equivalent grade degrees and radians for each.