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Which outcome commonly resulted from exceeding the critical buckling load on cast iron columns in 19th-century factories?

A)Catastrophic structural collapse
B)Localized material yielding
C)Increased column ductility
D)Reduced vibrational resonance

💡 Explanation

When critical buckling load is exceeded, Euler buckling occurs due to geometric instability, leading to a sudden lateral deflection and structural failure. Therefore catastrophic structural collapse results, rather than yielding, ductility increase, or resonance reduction, which require different material responses or loading conditions.

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