Roof pitch refers to the slope which the rafter creates.
Pitch of a roof angle.
Historically roof pitch was designated in two other ways.
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.
In the uk the typical house has a pitch between 40 50 although 45 should be avoided.
A ratio of the ridge height to the width of the building span and as a ratio of the rafter length to the width of the building.
Roof pitch varies depending on culture climate style and available materials.
Contemporary houses often have flat roofs which shouldn t be completely flat but should be around 1 40.
The ridge height is 1 9 to 1 7th the span an angle of 12 5 to 16.
In the usa the range of standard pitches is anywhere between 4 12 and 9 12.
Most roof s have a pitch in the 4 12 to 9 12 range.
Roof pitch slope roof angle degree 1 12 pitch.
Roof pitch degree table.
Common roof pitches and equivalent grade degree and radian angles.
Commonly used roof pitches were given names such as greek.