Open Truss Roof Structure

Components of roof truss.

Open truss roof structure.

A timber roof truss is a structural framework of timbers designed to bridge the space above a room and to provide support for a roof trusses usually occur at regular intervals linked by longitudinal timbers such as purlins the space between each truss is known as a bay. In essence a roof built on trusses is much more structurally sound. A roof truss is supported by the exterior walls and span the width of the building. Because of the stability of this shape and the methods of analysis used to calculate the forces within it a truss composed entirely of triangles is known as a simple truss.

A roof truss is a structural unit designed to frame a roof and to support the roof material interior ceiling insulation and forces caused by snow rain and wind. The simplest form of a truss is one single triangle. A roof truss is a structural framework of timbers designed to bridge the space above a room and to provide support for a roof. The benefit of a truss over older structural designs like coupled rafters is that it provides longitudinal support.

This type of truss is seen in a framed roof consisting of rafters and a ceiling joist and in other mechanical structures such as bicycles and aircraft. Roof framing has undergone a quiet revolution over the past half century. Rafters have a tendency to flatten under gravity thrusting outwards on the walls.