Civil Engineering MCQAE Level Civil Engineering
A compound column has two ISMB 300 sections battened at their flanges. Find the critical centre-to-centre distance between the sections for maximum compressive capacity. (Each ISMB: Ixx = 8500 cm⁴, Iyy = 500 cm⁴, A = 50 cm²)
Steel StructuresSteel StructuresMEDIUM
Choose the correct answer
A
√80 cm
B
√160 cm
C
√320 cm
D
√640 cm
Correct Answer
D. √640 cm
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Set combined Ixx = Iyy: 2(8500) = 2[500 + 50(d/2)²] ⇒ 25d² = 16000 ⇒ d = √640 cm.
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This MCQ belongs to WBPSC AE Previous Years Questions Series. Full tests include timed attempts, rank comparison and subject-wise analysis.