Pitch Of A Roof Angle

Common roof pitches and equivalent grade degree and radian angles.

Pitch of a roof angle.

Roof pitch degree table. Roof pitch varies depending on culture climate style and available materials. Roof pitch slope roof angle degree 1 12 pitch. There is no standard universal roof pitch.

Most roof s have a pitch in the 4 12 to 9 12 range. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. Contemporary houses often have flat roofs which shouldn t be completely flat but should be around 1 40. 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 refers to the slope which the rafter creates. Commonly used roof pitches were given names such as greek. 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.

Historically roof pitch was designated in two other ways.