Steel Roof Truss Terminology

Truss terms the terms below are typically used to describe the various parts of a metal plate connected wood truss.

Steel roof truss terminology.

All trusses come with a 1 overhang. The wall plate width see figure 7. A slight vertical cut usually less than 75mm at the. The terms pitch and slope are simply two different ways of expressing the same measurement.

While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses. There are many ways of arranging and subdividing the chords and internal members. Truss configurations truss terms the terms below are typically used to describe the various parts of a metal plate connected wood truss. Any irregularity or imperfection in a tree log.

Truss terminology the terms below are typically used to describe the various parts of a metal plate connected wood truss. Aspects of truss design for roofs truss or i beam. Roof trusses are on a 4 12 pitch and lean to trusses are on a 2 12 pitch. Two basic types of trusses the pitched sor common.

The same roof has a 4 12 or 1 3 pitch. Custom overhang and pitches are available for additional charges shown below. This type of truss is commonly used to construct roofs in houses. 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.

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. The highest point on a truss where the sloping top chords meet. One engineering definition is. The truss profile span heel height overall height overhang and web configuration depend on the specific design conditions and will vary by application.

Bearing cut or seat cut. A roof s slope is the number of inches it rises for every 12 inches of horizontal run a roof with a 4 in 12 slope rises 4 inches for every 12 inches of horizontal run. Any permanent load such as the weight of the truss itself purlins sheathing roofing and ceiling acting vertically on the truss or truss members. A horizontal cut to the bottom of a sloping bottom chord usually the width of the bearing i e.

All trusses come with necessary nuts and bolts to assemble. The fink truss offers economy in terms of steel weight for short span high pitched roofs as the members are subdivided into shorter elements. The truss profile span heel height overall height overhang and web configuration depend on the specific design conditions and will vary by application. The term truss has often been used to describe any assembly of members such as a cruck frame or a couple of rafters.

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.