Queen Post Truss

A queen post truss is similar to a king post truss, but the structure is usually exposed and has two rafters that attach to a tie beam and a restraining beam through two vertical queen posts. This type of truss has benefits over a king post truss, as it can span wider widths and it is frequently used in residential homes, public buildings and bridges.

One of the reasons that a queen post truss is more popular than a king post support is that it provides more structural stability. It can also provide more space and make it easier to add a room at a later date.


These trusses can be made from a variety of materials such as timber or steel, but most homeowners choose timber since the beams are frequently exposed.  The exposed beams can add beauty and a unique style to the roof design.  They can be straight or made into decorative shapes with curves or carved figures.

The History of the Queen Post Truss

Queen post trusses have been used for many centuries, as they are extremely strong. In previous centuries, builder’s guides showed illustrations of this type of truss. King post trusses were recommended for short spans of 20 to 30 feet and queen post trusses for larger spans of 30 to 45 feet, although queen post trusses can go up to 60 feet. They were commonly used in architecture including Craftsman, Tudor, Gothic Revival, Stick and Queen Anne-style buildings

Famous Architecture

The queen post truss was traditionally used in churches and bridges in Europe and, later, in America.  The Four Mile Creek Bridge in Lincoln County, Oklahoma is an example of this type of truss.  It can also be combined with other types of trusses like in the Jericho Covered Bridge in Maryland, which features queen posts, multiple king posts and the Burr Arch in its construction.

When to Use a Queen Post Truss

Queen post trusses should be used when there is a large span that needs to be covered.  They are relatively inexpensive and can be made to fit almost any size or shape roof.  They transfer the weight load of the roof to the eave posts and allow for a clean, open space that needs no internal posts that might affect the architectural design of the building. It provides excellent structural support and can be adapted and combined with other types of roof trusses.

These types of trusses can provide a striking ceiling design that differentiates a home. While similar to other types of truss designs, this particular design is capable of supporting a roof over a greater span. When considering installing a queen post truss, it is important to discuss the plans with a qualified professional to determine what problems need to be considered before beginning the project.



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