Wha Is A Roof Truss

Rafter boards are fastened to the ridge board at the peak and the top plate where they join the wall.

Wha is a roof truss.

The raised heel roof truss reduces condensation problems since the truss creates a vapor barrier and is commonly seen in humid climates where mold is a common issue. The truss is then connected to the building structure using a special connector like the one shown here a simpson dsc. Properly designed drag strut trusses shear walls or roof diaphragms and their connections will transfer lateral loads to the foundation and then safely into the ground. There are many types of roof trusses as wall as many types of roofs more types than there are parts.

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. The design must take into consideration the strength of the timbers if a wooden truss is used or the steel if a steel truss is used. If one component of a truss is removed or weakened the entire roof could give way. The boards creating the slope of the roof are wider than lumber used to build trusses 2x8s 2x10s and 2x12s are most common in rafters vs.

A truss roof is a triangular wooden structure constructed in mass quantities at a factory and shipped to job sites. In structural engineering the name truss describes a triangular design a joint framed structure that sustained the inclined vertical or horizontal loads a truss consist of angles channels plates and eye bars. It is a framework typically consisting of rafters posts and struts supporting a roof bridge or other structure. At the site the truss roof frames are put together by framing carpenters.

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 article and series of illustrated diagrams shows you all the parts of a basic roof truss king truss and queen truss. Rafters have a tendency to flatten under gravity thrusting outwards on the walls. Just as there are many types of roofs with many roof parts there are many different types of roof trusses this extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs.

In finished space insulation is placed between the rafter boards and drywall or other material is fastened to the face. This truss requires a soffit siding and additional insulation work from the onset which elevates construction costs. When roofing a building or home adhering to a proper roof truss design is critical. The simplest form of a truss is one single triangle.

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. While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses.