A truss is essentially a triangulated system of straight interconnected structural elements. The most common use of trusses is in buildings, where support to roofs, the floors and internal loading such as services and suspended ceilings, are readily provided. Truss, in engineering, a structural member usually fabricated from straight pieces of metal or timber to form a series of triangles lying in a single plane. It consists of a frame of axially loaded members that are either in tension or compression and are interconnected at the joints. Trusses are structurally engineered to be efficient structural systems where every component is critical to the long-term durability and strength of the truss. For more details and information download drawing file.