Open Truss Roof Structure

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.

Open truss roof structure.

The simplest form of a truss is one single triangle. Rafters have a tendency to flatten under gravity thrusting outwards on the walls. The benefit of a truss over older structural designs like coupled rafters is that it provides longitudinal support. Components of roof truss.

In essence a roof built on trusses is much more structurally sound. 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. Trusses are gradually replacing the conventional rafters to the point that nowadays more than 80 percent of new residential construction uses trusses to support the roof. 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.

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. A roof truss is supported by the exterior walls and span the width of the building. Roof framing has undergone a quiet revolution over the past half century.