Civil Engineering MCQAE Level Civil Engineering
Which of the following about cross-section classification is correct?
Steel StructuresPlastic SectionMEDIUM
Choose the correct answer
A
plastic sections are never compact
B
a plastic section buckles before yield at every fibre
C
classification is unrelated to width-thickness ratio
D
a plastic section can develop and sustain plastic moment with rotation capacity
Correct Answer
D. a plastic section can develop and sustain plastic moment with rotation capacity
Why is this the answer?
Section class controls local buckling and rotation capacity. Correct option: D.
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