Which Of These Terms Are Parts Of A Roof Truss

The wall plate width see figure 7.

Which of these terms are parts of a roof truss.

Roof truss parts explained. 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. The highest point on a truss where the sloping top chords meet. Hip this is an external angle formed by the intersection of two sloping roof planes.

Structural support of trusses usually walls normally with a timber wall plate. The following diagram shows the terms applying to gable end roofs. North light roof truss. Different parts of the truss are known by a variety of terms.

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. Rafters have a tendency to flatten under gravity thrusting outwards on the walls. A slight vertical cut usually less than 75mm at the. A horizontal cut to the bottom of a sloping bottom chord usually the width of the bearing i e.

North light truss is the oldest and most economical kind of truss. 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. Bearing cut or seat cut. 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.

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. The following diagram shows the terms used for general roof truss members. Secondary bending the bending stress in a member caused by the deflection of the whole truss. Have a wide set of lattice girders that include support trusses.

These are found in industrial buildings drawing rooms and large spaces with a span of 20 30 meters. Terms for roof truss members. Select the labelled areas for a description of the different parts of the roof truss. Scupper an opening in a roof usually faced with metal flashing to drain water from the roof at a given point.

The rafters when combined together help to form the truss.