Enter your design parameters and click "Calculate" to analyze the steel member.
Axial Capacity

Enter values to calculate axial capacity.

Bending Capacity

Enter values to calculate bending capacity.

Shear Capacity

Enter values to calculate shear capacity.

Combined Load Check

Enter values to check combined load capacity.

Design Summary

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Buckling Load vs. Length
Interaction Curve (P vs. M)
Calculation Methodology

This tool uses standard steel design equations from selected design codes.

Axial Capacity (Compression)

For AISC LRFD: Pn = 0.9 × Fy × A (yielding) or Pn = 0.9 × (π² × E × I) / (K × L)² (buckling)

For AISC ASD: Pn = Fy × A / 1.67 (yielding) or Pn = (π² × E × I) / (K × L)² / 2.31 (buckling)

Bending Capacity

For AISC LRFD: Mn = 0.9 × Fy × Zx

For AISC ASD: Mn = Fy × Zx / 1.67

Shear Capacity

For AISC LRFD: Vn = 0.9 × 0.6 × Fy × Aw

For AISC ASD: Vn = 0.6 × Fy × Aw / 1.5

Combined Load Check

For AISC LRFD: P/Pn + M/Mn ≤ 1.0

For AISC ASD: P/Pn + M/Mn ≤ 1.0