What framework typically consisting of rafters, posts, and struts supports a roof, bridge, or other structure?

• A. Rubbing
• B. Truss
• C. Tile
• D. Removal

Answer: (B)

A truss is a framework built from straight members connected at joints to form triangular units, designed to carry loads efficiently. In roofs, bridges, or similar structures, these members—such as rafters, posts, and struts—work together to spread forces through tension and compression, giving the structure strength while using relatively little material. The triangular arrangement resists bending, allows long spans, and distributes weight to supports, which is why this framework is so commonly used for roofing and bridging. The other options don’t describe a structural framework: rubbing isn’t a term for a framework, tile is a roofing material, and removal is an action.