39 Parts of a Roof Truss with Illustrated Diagrams The roof truss structure and design is integral to roof structural integrity and shape. There are many types of roof trusses (as wall as many types of roofs) more types than there are parts. This article and series of illustrated diagrams shows you all the parts of a basic roof truss, king truss and queen truss. 30 Different Types of Roof Trusses (Illustrated Just as there are many types of roofs with many roof parts, there are many different types of roof trusses. This extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs.