Investigation into the Load-Bearing Performance of Steel Angles with Material Variation

ANSI/AISC 360–22 has raised the recommended yield strength for steel angles (from A36 to A572 Gr. 50), resulting in a significant enhancement of their design load-bearing capacity. Using excel VBA, study analyzed the axial compressive strength of concentrically loaded steel angles and compared the numerical results with both design values and experimental data. It evaluated the design formulas and constraints outlined in ANSI/AISC 360–10, ANSI/AISC 360–16, and ANSI/AISC 360–22. The findings reveal that although ANSI/AISC 360–22 improves the yield strength design for steel materials, its axial compressive strength predictions for large-sized, high-strength steel angles remain conservative, with maximum deviations from experimental results reaching up to 42%. Yield strength of steel angles and the eccentricity of applied loads significantly influence their load-bearing performance. Future research will focus on investigating the effects of load eccentricity and cross-sectional dimension variations on load-bearing behavior to improve design accuracy and economic feasibility.