Traditional Queen Post Roof Truss

This arrangement is particularly good for longer truss spans in excess of 24 feet.

Traditional queen post roof truss.

Queen post timber trusses can easily span 30 feet or more. The oldest surviving roof truss in the world is a king post truss in saint catherine s monastery egypt built between 548 and 565. What is a queen post truss. The queen post truss is simpler and lighter in weight.

King post trusses are also used as a structural element in wood and metal bridges. 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. King posts also appear in gothic revival architecture queen anne style architecture and occasionally in modern construction. This truss is also very strong and adaptable with regard to desired span and roof pitch.

A queen post roof truss is essentially a modification of the king 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. Queen post truss is suitable for 8 to 12 meters. They make a fan type design hence then name fan truss.

Queen post trusses provide for larger spans than those capable of a king post. It s also more lightweight and can be used to cover larger areas. Sometimes referred to as a palladian truss the queen post truss consists of two principal rafters a tie beam two vertical posts queen posts and a straining beam. Unlike the king post the queen post has two wooden vertical posts called queen post.

These trusses are capable of handling spans up to 22 long. This truss is made from a variety of materials such as timber or steel. They look great and offer an open area in the middle of the truss. 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.