a number of timbers framed together to bridge a space, to be self-supporting, and to carry other timbers. The trusses of a roof are generally named after a particular feature in their construction, e.g. King-post, Queen-post.
A truss system includes the top chord or rafter (where roof sheathing is nailed), a joist or bottom chord (where the interior ceiling is nailed) and angled pieces that form a web and are used to add strength.
Large beams that are often arranged in triangles, which support a roof or bridge across an open space.
Engineered wood structural members used to construct floors and roofs.
A roof framing system with rafters supported by crossed webs. An attic with trusses is not suitable for conversion to living space.
Engineered wood roof system.