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Classification by slenderness ratio: identify the type of column for λ = 100 A column has slenderness ratio λ = 100 (λ = L<sub>e</sub>/k). Using standard classification ranges, state the column type.

Difficulty: Easy

Short (stocky) column
Medium (intermediate) column
Long (slender) column
Built-in/strut column only

Correct Answer: Long (slender) column

Explanation:

Concept
Slenderness ratio λ = L_e/k gauges buckling tendency; higher λ means greater susceptibility to Euler-type buckling.

Typical ranges (guideline)
• Short: small λ (often < 32–40) – crushing governs.• Intermediate: moderate λ (≈ 40–80).• Long: large λ (≈ ≥ 80–100) – buckling dominates; Euler/Rankine applicable.

Final Answer
Long (slender) column.

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