Computer · Design of Steel Structures
In Merchant-Rankine's formula, what is the relation used to determine the permissible critical stress (f) in columns based on yield stress (fy) and elastic buckling stress (fcr)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1f ∝ fy / [φ + √(φ2 - λ2)]
- 21 / fn = (1 / fyn) + (1 / fcrn)✓
- 3f ∝ fy / [1 + 0.2·sec(c·λ·√f)]
- 4f ∝ π2E / λ2
Correct answer
1 / fn = (1 / fyn) + (1 / fcrn)
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