Steel Beam-Column Interaction Example
Step-by-step beam-column interaction check for a W250x89 wide flange member under combined axial compression and biaxial bending per AISC 360-16 Chapter H.
Given Parameters
steel section
cross-section properties
plastic section moduli
material properties
required axial compressive strength
required flexural strengths
effective and unbraced lengths
Calculation Steps
1. Column Compressive Strength phi_c Pn
2. Determine Governing Interaction Branch
3. Strong-Axis Flexural Strength phi_b Mnx
4. Weak-Axis Flexural Strength phi_b Mny
5. AISC Equation H1-1a Check
AISC H1-1a Interaction Ratio
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