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The slenderness ratio of a column is defined as

  • A.The length divided by the section depth
  • B.Effective length over least radius
  • C.The length divided by the cross-sectional area
  • D.The radius of gyration divided by the length

Answer: B

Slenderness combines the column's length with the shape of its section into a single parameter that governs the buckling stress. The least radius of gyration is used because the column will buckle about whichever axis is weakest.

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