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Unlike a column, a plate that has buckled

  • A.Goes on carrying increasing load
  • B.Immediately collapses
  • C.Carries no further load at all
  • D.Returns to its original shape

Answer: A

Membrane action lets the plate redistribute load towards its supported edges and go on carrying more, which is the whole basis of effective width design. A column, by contrast, has no such reserve and its buckling load is essentially its failure load.

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