Roof Slope Conversion Table

Roof pitch is the slope created by the rafter.

Roof slope conversion table.

Then you ll be able to measure slope from an unfinished attic space under the roof. Roof pitch on the form x 12 can be expressed in grades as. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level.

Example slope as grade. 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. 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. 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.

You can find the roof pitch in the form of x 12 like 4 12 or 9 12. Finding the best roof slope conversion chart. S grade 1 m 2 m 50 slope and roof pitch. Two most common methods 4 12 or 4 12 are used for marking the pitch of a 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. Slope as grade for an elevation of 1 m over a distance of 2 m can be calculated as.