Scope & assumptions
Compression member screening using user-entered K, L, A and r. SI inputs are converted internally while the AISC column curve is applied.
METRIC REPUBLIC ENGINEERING · PRELIMINARY
AISC 360-22 Column Compression Check
AISC 360-22 compression-column screening using KL/r, Euler stress and the standard inelastic/elastic column curve.
ANSI/AISC 360-22KL/r column curveCompression screening
Calculation basis
Fe = π²E/(KL/r)². If Fy/Fe ≤ 2.25: Fcr = 0.658^(Fy/Fe)·Fy; otherwise Fcr = 0.877·Fe. φPn = φc·Fcr·A.
Important engineering note: Verify effective length, local slenderness/effective area, torsional/flexural-torsional buckling, built-up member rules and combined axial-flexure requirements to ANSI/AISC 360-22.
Reference basis
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Frequently asked questions
Is this a complete code design?
No. It is a transparent preliminary calculation. Code-specific limits, detailing, stability and project conditions must be verified independently.
Can I use the result for construction?
Use the result as a screening or checking aid only. Final design and construction documents should be verified by a qualified professional where required.
Why are some resistance factors entered by the user?
Many design standards contain member-, material-, product- or project-specific values. Metric Republic keeps these visible and user-controlled instead of hiding assumptions.