For a column with one end fixed and the other end hinged, what is the effective length factor K?

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RRB JE CE 22 Apr 2025 Shift 2 CBT 2 Official Paper
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  1. 0.5
  2. 1.0
  3. 2.0
  4. 0.7

Answer (Detailed Solution Below)

Option 4 : 0.7
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Explanation:

The effective length factor K depends on the boundary conditions of the column. For a column with one end fixed and the other end hinged, the K value is 0.7.

Additional InformationEffective Length Factors (K) for Different Boundary Conditions:

  1. Both ends fixed (K = 0.5): The column is well supported at both ends, so the effective length is reduced.

  2. Both ends pinned (K = 1.0): The column can rotate freely at both ends, leading to no reduction in effective length.

  3. One end fixed and the other free (K = 2.0): A free end increases the effective length, making the column more prone to buckling.

  4. One end fixed and the other hinged (K = 0.7): This combination provides some resistance at one end, while allowing rotation at the other, so the effective length is reduced compared to a fully pinned column but not as much as a fully fixed column.

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