Civil Engineering MCQAE Level Civil Engineering
Shape factor S for a rectangular cross-section in plastic analysis:
Structural AnalysisPlastic AnalysisEASY
Choose the correct answer
A
S = 1.0
B
S = 1.5
C
S = 1.12
D
S = 2.0
Correct Answer
B. S = 1.5
Why is this the answer?
S = Mp/Me = Z_p/Z_e. For rectangle: Z_e = bd²/6; Z_p = bd²/4. S = (bd²/4)/(bd²/6) = 6/4 = 1.5. For circle: 1.7. For I-section: ~1.12–1.15.
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This MCQ belongs to Magic Mock Test Series — GATE Civil Engineering. Full tests include timed attempts, rank comparison and subject-wise analysis.