Pitched Roof Roof Structure Terminology

2 1 duo pitched roof.

Pitched roof roof structure terminology.

Easily identified by their triangular shape gable roofs are generally two sided with a peak formed at the top hip. Angle a equals angle b. Roof slope is expressed as the ratio of a roof s rise vertical distance to each foot of run horizontal distance. This is the most common roof shape with equal pitches on either side i e.

All four sides slope downwards and are all equal in length to form a ridge at the top of the roof. It has a 1 4 pitch. A 4 in 12 pitch means the roof rises 4 inches for every 12 inches of horizontal distance. The pitch of a roof is its vertical rise divided by its horizontal span and is a measure of its steepness.

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. The word pitch was first used in the early 17th century to denote the highest point. This truss form is often introduced into domestic housing in conjunction with the conventional duo pitched roof to form an interesting roof line.