_________ use less material and are lighter than a comparable beam or joist for an equal span.

_________ use less material and are lighter than a comparable beam or joist for an equal span.

• A. Lentils
• B. Balloon framings
• C. Trusses
• D. Partitions

Answer: (C)

Using a truss lets a structure span longer with less material because the triangulated framework carries loads mainly in compression and tension along straight members, not in bending like a solid beam. This axial-load behavior, distributed through many triangles, makes the system stiff and efficient, so you can use lighter, smaller members for the same span. The result is less material and a lighter overall structure. Lentils are unrelated to structural framing. Balloon framing is a method of constructing walls, not a system that inherently reduces material for a given span. Partitions are non-structural interior walls and don’t carry long-span loads.

Using a truss lets a structure span longer with less material because the triangulated framework carries loads mainly in compression and tension along straight members, not in bending like a solid beam. This axial-load behavior, distributed through many triangles, makes the system stiff and efficient, so you can use lighter, smaller members for the same span. The result is less material and a lighter overall structure.

Lentils are unrelated to structural framing. Balloon framing is a method of constructing walls, not a system that inherently reduces material for a given span. Partitions are non-structural interior walls and don’t carry long-span loads.