The angle, or pitch, of a roof is calculated by the number of inches it rises vertically for every 12 inches it extends horizontally. For example, a roof that rises 6 inches for every 12 inches of horizontal run has a 6-in-12 pitch.
What is the minimum roof pitch allowed?
1/4:12
How steep does a roof have to be to be considered pitched?
OSHA defines a "steep roof" as any roof with a rise/run ratio over 4:12 (18.43 degrees). While most standard-pitched residential roofs seldom exceed a 12:12 pitch (45 degrees), the landscape is occasionally marked by a design which harkens back to earlier times, when much greater roof pitches were more common.Nov 7, 2006
What is the maximum pitch for a flat roof?
1-10 degrees
What degree is 9/12 roof?
If a roof rises 9″ in a length of 12″, this is 9/12 roof pitch. 9/12 roof pitch angle = 36.37 degrees.
What does a 12 pitch roof mean?
One of the most commonly used terms in roofing. ... Roof pitch (or slope) tells you how many inches the roof rises for every 12 inches in depth. An Example of a roof pitch would be a “6/12 pitch” which means that the roof rises 6 ” for every 12″ inward towards the peak (or ridge).