Pitch Of A Roof Angle

In the usa the range of standard pitches is anywhere between 4 12 and 9 12.

Pitch of a roof angle.

The ridge height is 1 9 to 1 7th the span an angle of 12 5 to 16. 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. In the uk the typical house has a pitch between 40 50 although 45 should be avoided. Commonly used roof pitches were given names such as greek.

Most roof s have a pitch in the 4 12 to 9 12 range. Historically roof pitch was designated in two other ways. Roof pitch varies depending on culture climate style and available materials. Common roof pitches and equivalent grade degree and radian angles.

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. You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof. Roof pitch refers to the slope which the rafter creates. There is no standard universal roof pitch.

Roof pitch degree table.