Which structural member is designed to span with less material and weight compared to a solid beam?

Which structural member is designed to span with less material and weight compared to a solid beam?

• A. Lintels
• B. Balloon framing
• C. Trusses
• D. Partitions

Answer: (C)

Spanning with less material comes from using an efficient load-path geometry. A truss creates a triangulated framework, so loads from the roof or floor are carried through many lightweight members in tension and compression. This arrangement distributes forces effectively and lets the structure span long distances with far less material than a solid beam would require. Other options don’t provide that spanning efficiency. A lintel is just a short horizontal support above openings and isn’t meant to span large distances or save material on the overall structure. Balloon framing describes a wall construction method with tall studs, not a system for spanning loads. Partitions are interior walls that typically don’t carry structural loads, so they don’t serve as spanning members.

Spanning with less material comes from using an efficient load-path geometry. A truss creates a triangulated framework, so loads from the roof or floor are carried through many lightweight members in tension and compression. This arrangement distributes forces effectively and lets the structure span long distances with far less material than a solid beam would require.

Other options don’t provide that spanning efficiency. A lintel is just a short horizontal support above openings and isn’t meant to span large distances or save material on the overall structure. Balloon framing describes a wall construction method with tall studs, not a system for spanning loads. Partitions are interior walls that typically don’t carry structural loads, so they don’t serve as spanning members.