Practice Quiz

Civil Engineering PE

Category - Material Mechanics

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When sketching the shape of a bending moment of a deflected beam, which of the following conventions is commonly used?
  1. Positive bending moment bends beam convex upwards
  2. Negative bending moment bends beam concave upwards
  3. Positive bending moment bends beam concave upwards
  4. All of the above
Explanation
Answer: C - When sketching the shape of a deflected beam, the convention used for a positive bending moment is to bend the concave upwards. When this convention is followed, the bend of the beam is exaggerated over the normal beam surface in order to demonstrate the results of a given loading.
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