If the unsupported length of a Stanchion is 4m and least radius of gyration of its cross-section is 5 cm, the slenderness ratio of the Stanchion will be:

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OSSC JE Civil Mains Official Paper: (Held On: 16th July 2023)
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  1. 60
  2. 70
  3. 80
  4. 100

Answer (Detailed Solution Below)

Option 3 : 80
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Concept:

A stanchion is a structural steel member, usually larger than a strut or a column whose main function is to withstand axial compressive stresses. e.g. an upright metal post on a ship.

The slenderness ratio is the ratio of the length of the member to the radius of gyration of the cross-section.

Calculation:

Slenderness ratio (SR) = l/r,

Where

l = effective length of the column and r = minimum radius of gyration

Slenderness ratio (SR) = 4 m/5 cm = 400 cm/5 cm = 80
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