Pitched Roof Roof Structure Terminology

All four sides slope downwards and are all equal in length to form a ridge at the top of the roof.

Pitched roof roof structure terminology.

Angle f equals angle g. A 4 in 12 pitch means the roof rises 4 inches for every 12 inches of horizontal distance. This is the most common roof shape with equal pitches on either side i e. A pitched roof is a roof that slopes downwards typically in two parts at an angle from a central ridge but sometimes in one part from one edge to another.

Angle a equals angle b. It has a 1 4 pitch. 2 1 duo pitched roof. Easily identified by their triangular shape gable roofs are generally two sided with a peak formed at the top hip.

2 4 truncated duo pitched roof. The word pitch was first used in the early 17th century to denote the highest point. Roof slope is expressed as the ratio of a roof s rise vertical distance to each foot of run horizontal distance.