Queen Post King Post Roof Truss

Queen post truss is suitable for 8 to 12 meters.

Queen post king post roof truss.

Queen post roof trusses alone are suitable for span up to 13 5 or 14 meters. A queen post is a tension member in a truss that can span longer openings than a king post truss. They look great and offer an open area in the middle of the truss. What is a queen post truss.

It is not suitable for the long span. The oldest surviving roof truss in the world is a king post truss in saint catherine s monastery egypt built between 548 and 565. 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. It is simple r lighter and requires less wood.

Oak king post truss an a frame truss with a centre post which so defines it from a queen truss which has no centre support. Queen post timber trusses can easily span 30 feet or more. A queen post is often confused with a queen strut one of two compression members in roof framing which do not form a truss in the engineering sense. King and queen post truss.

King posts also appear in gothic revival architecture queen anne style architecture and occasionally in modern construction. King post trusses are also used as a structural element in wood and metal bridges. Day bridge in southwestern pennsylvania. The pictures of hales hall barn w axham great barn and w estenhanger castle barn next page show how the queen truss may have developed into the hammer beam roof.

Even though it is a tension member rather than a compression member they are commonly still called a post. A king post uses one central supporting post whereas the queen post truss uses two. The truss is suitable for spans varying from 5 to 8 metre. King post truss is used when there is a need to support the weight of an expansive roof.

The queen post truss gradually replaced other truss types. Roofs constructed with the combination of king queen post roof trusses are a mansard truss truncated truss and king and queen post truss. It does not put weight on the centre of the main tie beam as the king post truss. The king post truss does not provide storage space because the frames are usually exposed and do allow extra room.

The queen post truss is simpler and lighter in weight. This truss is made from a variety of materials such as timber or steel. 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. It does not put weight on the centre of the main tie beam as the king post and crown post do.