Queen Post Roof Truss Design

If you need to add literal and or visual height to a space the modified king post may be what you like but as the bottom chord is raised higher the weaker the truss becomes something to keep in mind.

Queen post roof truss design.

This free online truss and roof calculator generates the axial forces and reactions of completely customisable 2d truss structures. Alpine truss designs are engineered to meet specific span configuration and load conditions. They look great and offer an open area in the middle of the 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. Queen post timber trusses can easily span 30 feet or more. 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. 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.

The queen post truss is simpler and lighter in weight. This truss is made from a variety of materials such as timber or steel. 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. Unlike a king post the queen post truss has two central vertical posts two rafters and a beam.

A king post uses one central supporting post whereas the queen post truss uses two. Queen post truss is used when there is a need to cover large areas. Queen post roof truss design hood roof bonnet roofing systems are basically a mansard roof backwards. Likewise referred to as kicked eaves a hood roof has 4 sides with a high top incline as well as a much more mild reduced incline offering cover around the sides of your home for a veranda.

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. It does not put weight on the centre of the main tie beam as the king post truss. It is more lightweight than the king post and can be used to cover larger areas. The truss is a framework consisting of rafters posts and struts which supports your roof.

As we will see below there are several different types of designs and this will impact the angles and designs of the overall truss. A queen post is a tension member in a truss that can span longer openings than a king post truss. 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. Even though it is a tension member rather than a compression member they are commonly still called a post.