In a typical truss subjected to downward loads, which member primarily carries compressive forces?

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Multiple Choice

In a typical truss subjected to downward loads, which member primarily carries compressive forces?

Explanation:
When a truss is subjected to downward loads, it behaves like a series of two‑force members that transfer loads along their lengths. The top edge of the truss tensions to resist the bending tendency, so the members at the top are pushed together and run in compression. In contrast, the bottom chord is pulled by the loads, so it carries tension. The diagonal and vertical web members share forces, but their sense (compression or tension) depends on the specific truss geometry, and they are not the primary compressive carriers in a typical downward-loaded truss. Therefore, the top chord is the member that primarily carries compressive forces.

When a truss is subjected to downward loads, it behaves like a series of two‑force members that transfer loads along their lengths. The top edge of the truss tensions to resist the bending tendency, so the members at the top are pushed together and run in compression. In contrast, the bottom chord is pulled by the loads, so it carries tension. The diagonal and vertical web members share forces, but their sense (compression or tension) depends on the specific truss geometry, and they are not the primary compressive carriers in a typical downward-loaded truss. Therefore, the top chord is the member that primarily carries compressive forces.

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