What type of truss is known as a Queen Post Truss?

The Queen Post Truss is a specific type of truss design characterized by its use of two vertical posts, or "queen posts," that support the top chord of the truss and are made to carry greater spans than some simpler truss designs. The unique feature of the Queen Post Truss is that the two vertical posts extend from the lower chord to the upper chord, allowing for a central point of support that effectively distributes loads. This design is particularly beneficial for spanning distances in roofing applications and provides more structural stability compared to trusses without such supportive elements.

In addition, the geometry of a Queen Post Truss allows for the clearance of a larger space below compared to other truss designs, making it ideal for applications where more room is desirable, such as in barns or auditoriums. The design not only serves structural purposes but can also allow for aesthetic considerations in buildings where the truss may be visible.

Trusses like the King Post Truss use a single vertical post, while other designs such as Howe and Fan Trusses have different arrangements of members that affect their overall strength, load distribution, and applications. Therefore, the distinctive combination of vertical queen posts and structural design specifically identifies the Queen Post Truss.