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Web Buckling

Which one of ...

Question

Which one of the following factors does not affect the lateral buckling strength of a steel I-section undergoing bending about its major axis?

A

Radius of gyration about the minor axis of the section

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B

Boundary conditions at the ends

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C

Radius of gyration about the major axis of the section

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D

Laterally unsupported length of the compression flange

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Solution

The correct option is C Radius of gyration about the major axis of the section

Lateral buckling occurs about minor axis so lateral buckling strength is independent of radius of gyration about the major axis.

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γ_{m o} = 1.10 a n d γ_{m 1} = 1.25

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