AISC 360-22ASTM A992 / A6W12 Series
AISC W12x45 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 | 45 lb/ft | 67 kg/m |
| Cross-Sectional Area | A | 13.1 in² | 8452 mm² |
| Overall Depth | d | 12.1 in | 307.3 mm |
| Flange Width | bf | 8.05 in | 204.5 mm |
| Flange Thickness | tf | 0.575 in | 14.6 mm |
| Web Thickness | tw | 0.335 in | 8.5 mm |
| Flange Centroid Distance | ho | 11.5 in | 292.1 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 348 in⁴ | 144.8 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 57.7 in³ | 946 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 64.2 in³ | 1052 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 5.15 in | 130.8 mm |
| Weak-Axis Inertia | Iy | 50 in⁴ | 20.8 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 12.4 in³ | 203 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 19 in³ | 311 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 1.95 in | 49.5 mm |
| Torsional Constant | J | 1.26 in⁴ | 524 ×10³ mm⁴ |
| Warping Constant | Cw | 2597 in⁶ | 443.1 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 2.23 in | 56.6 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
240.8 kip-ft
326.7 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
109.4 kips
487.2 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
7
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
32.7
✓ Compact Web (λw ≤ 90.5)