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.

Pitched roof roof structure terminology.

A roof that has two pitches on each slope. A purlin normally supports the rafters where the two pitches on the same elevation meet. 2 1 duo pitched roof. The inherent strength and integrity of the triangular form makes the roof a sound structure.

The slope of a roof. Angle a equals angle b. Mirrored pairs of rafters meet at a ridge and are connected across the base by a ceiling joist. Collar tie also collar beam in profile the framing of a conventional pitched roof forms a triangle.

The pitch of a roof is its vertical rise divided by its horizontal span and is a measure of its steepness. These roofs often include living accommodation in the roof void. Pitched roofs are constructed in two ways. This is the most common roof shape with equal pitches on either side i e.

A low wall that projects beyond the eves at the edge of a roof. 2 4 truncated duo pitched roof. A horizontal timber beam providing intermediate. Cupola a relatively small roofed structure generally set on the ridge or peak of a main roof area.

This truss form is often introduced into domestic housing in conjunction with the conventional duo pitched roof to form an interesting roof line. 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 f equals angle g. The butt of a shingle is the end that faces down roof.

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