AISC 360-22ASTM A992 / A6W12 Series
AISC W12x30 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 | 30 lb/ft | 44.6 kg/m |
| Cross-Sectional Area | A | 8.79 in² | 5671 mm² |
| Overall Depth | d | 12.3 in | 312.4 mm |
| Flange Width | bf | 6.52 in | 165.6 mm |
| Flange Thickness | tf | 0.44 in | 11.2 mm |
| Web Thickness | tw | 0.26 in | 6.6 mm |
| Flange Centroid Distance | ho | 11.9 in | 302.3 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 238 in⁴ | 99.1 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 38.6 in³ | 633 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 43.1 in³ | 706 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 5.21 in | 132.3 mm |
| Weak-Axis Inertia | Iy | 20.3 in⁴ | 8.4 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 6.2 in³ | 102 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 9.6 in³ | 157 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 1.52 in | 38.6 mm |
| Torsional Constant | J | 0.457 in⁴ | 190 ×10³ mm⁴ |
| Warping Constant | Cw | 1133.2 in⁶ | 193.3 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 1.77 in | 45 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
161.6 kip-ft
219.3 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
86.3 kips
384.4 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
7.41
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
43.9
✓ Compact Web (λw ≤ 90.5)