Answer :
Final answer:
Correct option is B) Among the given options, an I-beam is the most prone to web local buckling or crippling, which occurs when the web, or vertical plate connecting the top and bottom flanges, fails under stress.
Explanation:
Of the given options, an I-beam is the steel beam section that is most likely to fail via web local buckling or crippling. Web local buckling or crippling occurs when the web of a steel beam, which is the vertical plate connecting the top and bottom flanges, buckles or yields under stress. This is commonly seen in I-beams as they have a higher tendency to deform under heavy loads. This is because, while the web provides shear resistance, the flanges resist most of the bending moment. If the web's size is not appropriate, it is more susceptible to failure.
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