AISC 360-22ASTM A992 / A6W12 Series
AISC W12x120 Properties & Dimensions
Standard wide flange I-beam cross-section properties, geometric dimensions, and LRFD design capacities per AISC Steel Construction Manual 15th/16th Edition.
Cross-Section Technical Schematic
Dual Units: Imperial (US) · SI MetricGeometric Dimensions & Area
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Nominal Weight | w | 120 lb/ft | 178.6 kg/m |
| Cross-Sectional Area | A | 35.2 in² | 22710 mm² |
| Overall Depth | d | 13.1 in | 332.7 mm |
| Flange Width | bf | 12.3 in | 312.4 mm |
| Flange Thickness | tf | 1.11 in | 28.2 mm |
| Web Thickness | tw | 0.71 in | 18 mm |
| Flange Centroid Distance | ho | 12 in | 304.8 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 1070 in⁴ | 445.4 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 163 in³ | 2671 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 186 in³ | 3048 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 5.51 in | 140 mm |
| Weak-Axis Inertia | Iy | 345 in⁴ | 143.6 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 56 in³ | 918 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 85.4 in³ | 1399 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 3.13 in | 79.5 mm |
| Torsional Constant | J | 12.9 in⁴ | 5369 ×10³ mm⁴ |
| Warping Constant | Cw | 19516.8 in⁶ | 3329.8 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 3.56 in | 90.4 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
697.5 kip-ft
946.4 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
251.1 kips
1117.9 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
5.54
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
15.3
✓ Compact Web (λw ≤ 90.5)