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Civil Engineering QUESTION #6608
Question 1
In plastic analysis of steel structures, the 'Shape Factor' of a cross-section is defined as the ratio of:
  • Elastic Section Modulus ($S$) to Plastic Section Modulus ($Z$)
  • Plastic Section Modulus ($Z$) to Elastic Section Modulus ($S$)✔️
  • Moment of Inertia ($I$) to Radius of Gyration ($r$)
  • Yield Stress ($F_y$) to Ultimate Stress ($F_u$)
Correct Answer Explanation
The Shape Factor $f = Z/S$. It represents the reserve strength of a section between the first yield and the formation of a plastic hinge.