Column Calculator
Calculate column buckling load, slenderness ratio, and load capacity for structural design.
About This Calculator
Calculate column buckling capacity using Euler's formula. Determines critical load, slenderness ratio, and whether the column is short, intermediate, or long for structural design purposes.
🧮 Column Formulas
Euler Buckling Load:
P_cr = π²EI / (KL)²Slenderness Ratio:
λ = KL / r where r = √(I/A)Critical Stress:
σ_cr = π²E / λ²📊 Effective Length Factors (K)
| End Condition | K (Theory) | K (Design) |
|---|---|---|
| Fixed-Fixed | 0.5 | 0.65 |
| Fixed-Pinned | 0.7 | 0.8 |
| Pinned-Pinned | 1.0 | 1.0 |
| Fixed-Free | 2.0 | 2.1 |
💡 Design Tips
- Short columns: λ < 40, failure by crushing
- Intermediate: 40 < λ < 120, use interaction formulas
- Long columns: λ > 120, Euler buckling governs
- Safety factor: Apply appropriate factors per code
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? Frequently Asked Questions
How accurate is this
This calculator uses standard formulas and provides accurate results for typical use cases. For professional or critical applications, always verify results with certified professionals or official sources.
Is this calculator free to use?
Yes, this Column Calculator • Civil Engineering • Calculator is completely free to use with no registration required. You can use it as many times as needed without any limitations.
Can I use this on mobile devices?
Absolutely! This calculator is fully responsive and works perfectly on smartphones, tablets, and desktop computers.
How do I interpret the results?
The results are displayed clearly with appropriate units. Refer to the About This Calculator section for detailed information.