Free Tool · AISC 360-22 Chapter F + G

AISC Steel Beam Calculator

Calculate flexural strength per AISC 360-22 Chapter F — Lateral-Torsional Buckling (LTB), Flange Local Buckling (FLB), and Tension Flange Yielding (TFY). Includes shear resistance (Chapter G), deflection checks (L/360, L/240), and section classification. W, M, H, HP series.

Beam Parameters

W/M/H/HP Section

Steel grade

Load combination

LRFD ASD

Load & Span

Load type

UDL Midspan point Two at L/3

Load units

Span L (ft)

Lateral brace spacing Lb (ft)

Unbraced length for LTB. Defaults to span L.

End condition

Simply supported Cantilever

Loads

P₁ — Dead load

Pₐ — Live load

Flexural Utilisation — LRFD

—

Applied Loads (UDL)

Span L (ft) —

Max moment M* (LRFD) —

Max shear V* (LRFD) —

Section Classification (AISC 360-22 Table B4.1a)

Flange λ = bf/2tf —

Flange class —

Web λ = (d−2tf)/tw —

Overall section class —

Lateral-Torsional Buckling (AISC 360-22 §F2)

Cb —

Lp —

Lr —

Lb —

LTB mode —

Mn (LTB) —

φMn (LRFD) —

Mn/Ω (ASD) —

Flange Local Buckling (AISC 360-22 §F4)

Flange λ —

Mn (FLB) —

φMn (LRFD) —

Tension Flange Yielding (AISC 360-22 §F5)

Mn (TFY) —

φMn (LRFD) —

Governing Flexural Capacity + Utilisation

Governing failure mode —

Mn,governing —

φMn (LRFD) / Mn/Ω (ASD) —

Util. η = M*/φMn —

Shear Strength (AISC 360-22 §G2)

Web area Aw (in²) —

φVn (LRFD) —

Vn/Ω (ASD) —

V*/φVn —

Deflection (AISC 360-22 App. C)

Live δ —

Live limit (L/360) —

Live check —

Total δ —

Total limit (L/240) —

Total check —

W section beam — UDL on simply supported span (schematic)

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Related tools

→ AISC column (Ch. E + H)

→ LTB calculator (EN 1993-1-1 §6.3.2)

→ Shear capacity

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