Queen Post Roof Truss Design

They look great and offer an open area in the middle of the truss.

Queen post roof truss design.

This free online truss and roof calculator generates the axial forces and reactions of completely customisable 2d truss structures. Queen post roof truss design hood roof bonnet roofing systems are basically a mansard roof backwards. Queen post truss is suitable for 8 to 12 meters. A queen post is a tension member in a truss that can span longer openings than a king post truss.

This rafter truss calculator has a range of applications including being used as a wood truss calculator roof truss calculator roof rafter calculator scissor truss calculator or for roof framing. 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. 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. 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.

Queen post truss is used when there is a need to cover large areas. Even though it is a tension member rather than a compression member they are commonly still called a post. The king post truss is a wonderful choice for exterior dormers gables entryways and again the great room the king post can support spans of 40ft and beyond even in vermont. It is more lightweight than the king post and can be used to cover larger areas.

A king post uses one central supporting post whereas the queen post truss uses two. What is a queen post 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. Queen post timber trusses can easily span 30 feet or more.

Unlike a king post the queen post truss has two central vertical posts two rafters and a beam. The queen post truss is simpler and lighter in weight. This truss is made from a variety of materials such as timber or steel. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers.

As we will see below there are several different types of designs and this will impact the angles and designs of the overall truss. Alpine truss designs are engineered to meet specific span configuration and load conditions. 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. The truss is a framework consisting of rafters posts and struts which supports your roof.