Which Of These Terms Are Parts Of A Roof Truss

Scupper an opening in a roof usually faced with metal flashing to drain water from the roof at a given point.

Which of these terms are parts of a roof truss.

Select the labelled areas for a description of the different parts of the roof truss. The following diagram shows the terms used for general roof truss members. Bearing cut or seat cut. A horizontal cut to the bottom of a sloping bottom chord usually the width of the bearing i e.

Different parts of the truss are known by a variety of terms. Shear horizontal the force in a member which tends to cause the top half to slide horizontally in the opposite direction from the bottom half usually near the support. Have a wide set of lattice girders that include support trusses. Hip this is an external angle formed by the intersection of two sloping roof planes.

Horizontal beams supported by posts and used to support the mid span of rafters to cover longer spans these are used in large buildings like the traditional large old barns in the us. Truss the truss is a framework comprised of wooden beams that helps to support the roof. Structural support of trusses usually walls normally with a timber wall plate. Rafters have a tendency to flatten under gravity thrusting outwards on the walls.

Roof truss parts explained. Just as there are many types of roofs with many roof parts there are many different types of roof trusses. Rafters these are wooden beams that run from the top of the roof to the bottom. Learn about the 30 different types of roof trusses with these series of 30 truss diagrams that clearly shows all the parts and different styles of trusses you can use for different types of roofs.

Terms for roof truss members. One of a series of diagonal members of the truss that meet at the apex in order to support the roof deck and its loads. The highest point on a truss where the sloping top chords meet. Secondary bending the bending stress in a member caused by the deflection of the whole truss.

The wall plate width see figure 7. 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. The rafters when combined together help to form the truss. A slight vertical cut usually less than 75mm at the.

These are found in industrial buildings drawing rooms and large spaces with a span of 20 30 meters.