Steel Roof Truss Terminology

There are many ways of arranging and subdividing the chords and internal members.

Steel roof truss terminology.

The same roof has a 4 12 or 1 3 pitch. Decomposition of wood substance caused by action of wood destroying fungi resulting in softening loss of strength and weight and often in change of texture and color. A horizontal cut to the bottom of a sloping bottom chord usually the width of the bearing i e. Custom overhang and pitches are available for additional charges shown below.

A slight vertical cut usually less than 75mm at the. Bearing cut or seat cut. Truss terms the terms below are typically used to describe the various parts of a metal plate connected wood truss. The truss profile span heel height overall height overhang and web configuration depend on the specific design conditions and will vary by application.

The fink truss offers economy in terms of steel weight for short span high pitched roofs as the members are subdivided into shorter elements. Truss derives from the old french word trousse from around 1200 which means collection of things bound together. Truss terminology the terms below are typically used to describe the various parts of a metal plate connected wood truss. The wall plate width see figure 7.

Structural support of trusses usually walls normally with a timber wall plate. Aspects of truss design for roofs truss or i beam. A truss is a single plane framework of individual structural member sic connected at their ends of forms a series of. All trusses come with a 1 overhang.

Truss configurations truss terms the terms below are typically used to describe the various parts of a metal plate connected wood truss. The highest point on a truss where the sloping top chords meet. One engineering definition is. Two basic types of trusses the pitched sor common.

The term truss has often been used to describe any assembly of members such as a cruck frame or a couple of rafters. The truss profile span heel height overall height overhang and web configuration depend on the specific design conditions and will vary by application. Roof trusses are on a 4 12 pitch and lean to trusses are on a 2 12 pitch. This type of truss is commonly used to construct roofs in houses.

Any permanent load such as the weight of the truss itself purlins sheathing roofing and ceiling acting vertically on the truss or truss members. The truss profi le span heel height overall height overhang and web confi guration depend on the specifi c design conditions and will vary by application. All trusses come with necessary nuts and bolts to assemble. 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.

The terms pitch and slope are simply two different ways of expressing the same measurement.