Queen Post Roof Truss Span

Common truss types and spans 1.

Queen post roof truss span. As the name implies this pitched truss has the combined appearance of the queen post truss and scissors truss. Queen post truss is used when there is a need to cover large areas. A king post has a central vertical post as used in architectural or bridge designs working in tension to support a beam below from a truss apex above. A king post uses one central supporting post whereas the queen post truss uses two.

It can also be built of combination of wood and steel. Alpine truss designs are engineered to meet specific span configuration and load conditions. The queen post truss is simpler and lighter in weight. The oldest surviving roof truss in the world is a king post truss in saint catherine s monastery egypt built between 548 and 565.

They look great and offer an open area in the middle of the truss. Queen post timber trusses can easily span 30 feet or more. Even though it is a tension member rather than a compression member they are commonly still called a post a queen post is often confused with a queen strut one of two compression members in roof framing which. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers.

These steel joints are needed to support the overall truss. King post trusses are also used as a structural element in wood and metal bridges. Queen post truss is suitable for 8 to 12 meters. King post roof truss spans upto8m king post truss is a wooden truss.

The same thing is true for the bridge of the truss. Common trusses their spans king post span up to 16 queen post fan spans 10 to 22 fink w spans 16 to 33 howe k spans 24 to 36. Queen post truss spans upto 10m queen post truss is also a wooden truss. The more complex the truss framework is the greater quantity of these joints will be required.

Finally the truss calculator will compute the best dimensional method to connect the pieces of the truss with steel joints and a bridge. It can be used for spans upto 10m. A queen post is a tension member in a truss that can span longer openings than a king post truss. King posts also appear in gothic revival architecture queen anne style architecture and occasionally in modern construction.

It can be used for spans upto 8m. Total load psf duration factor live load psf roof type 55 1 15 40 snow shingle 55 1 15 30 snow tile 47 30 snow 40 20 snow 1 25 20. Queen post roof trusses are very similar in design to king post trusses except that the interior of the truss has two vertical queen posts instead of one central king post. Its web configuration resembles that of the queen post truss while its appearance resembles that of the scissors truss.

What is a queen post truss. Queen post roof truss queen post truss is define as a pitched roof support using two vertical tie posts connected between the tie beam and the rafters.