AISC 360-22ASTM A992 / A6W12 Series
AISC W12x72 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 | 72 lb/ft | 107.1 kg/m |
| Cross-Sectional Area | A | 21.1 in² | 13613 mm² |
| Overall Depth | d | 12.3 in | 312.4 mm |
| Flange Width | bf | 12 in | 304.8 mm |
| Flange Thickness | tf | 0.67 in | 17 mm |
| Web Thickness | tw | 0.43 in | 10.9 mm |
| Flange Centroid Distance | ho | 11.6 in | 294.6 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 597 in⁴ | 248.5 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 97.4 in³ | 1596 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 108 in³ | 1770 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 5.31 in | 134.9 mm |
| Weak-Axis Inertia | Iy | 195 in⁴ | 81.2 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 32.4 in³ | 531 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 49.2 in³ | 806 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 3.04 in | 77.2 mm |
| Torsional Constant | J | 2.93 in⁴ | 1220 ×10³ mm⁴ |
| Warping Constant | Cw | 10293.6 in⁶ | 1756.2 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 3.41 in | 86.6 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
405 kip-ft
549.5 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
142.8 kips
635.7 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
8.96
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
25.5
✓ Compact Web (λw ≤ 90.5)