Queen Post King Post Roof Truss

A king post uses one central supporting post whereas the queen post truss uses two.

Queen post king post roof truss.

This truss is made from a variety of materials such as timber or steel. A queen post roof truss is essentially a modification of the king post truss. The truss is suitable for spans varying from 5 to 8 metre. 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. Queen post roof trusses alone are suitable for span up to 13 5 or 14 meters. The queen post truss is simpler and lighter in weight.

King and queen post truss. Roofs constructed with the combination of king queen post roof trusses are a mansard truss truncated truss and king and queen post truss. Queen post truss is used when there is a need to cover large areas. 379 is a queen post truss for a 32 feet span.

Raised oak king post truss an a frame truss with centre support where the chord cross beam or tie beam is joined to a the frame vertically further up the angled supports. The same form is suitable up to about 42 feet span and beyond that size princesses or intermediate posts and struts have to be inserted between the queensn and the heels of the roof as shown by dotted lines. 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 truss.

King posts were used in timber framed roof construction in roman buildings and in medieval architecture in buildings such as parish churches and tithe barns the oldest surviving roof truss in the world is a king post truss in saint catherine s monastery egypt built between 548 and 565. Unlike the king post the queen post has two wooden vertical posts called queen post. Spans greater than 14 meters modification of queen post truss is carried out by introducing one or. King posts also appear in gothic revival architecture queen anne style architecture and occasionally in.

The king post truss does not provide storage space because the frames are usually exposed and do allow extra room. 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. It is not suitable for the long span. Queen post timber trusses can easily span 30 feet or more.

King post truss is used when there is a need to support the weight of an expansive roof. 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. It s also more lightweight and can be used to cover larger areas. Queen post truss is suitable for 8 to 12 meters.