AISC 360-22ASTM A992 / A6W18 Series
AISC W18x234 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 | 234 lb/ft | 348.2 kg/m |
| Cross-Sectional Area | A | 68.6 in² | 44258 mm² |
| Overall Depth | d | 21.1 in | 535.9 mm |
| Flange Width | bf | 11.7 in | 297.2 mm |
| Flange Thickness | tf | 2.11 in | 53.6 mm |
| Web Thickness | tw | 1.16 in | 29.5 mm |
| Flange Centroid Distance | ho | 19 in | 482.6 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 4900 in⁴ | 2039.5 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 466 in³ | 7636 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 549 in³ | 8996 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 8.44 in | 214.4 mm |
| Weak-Axis Inertia | Iy | 558 in⁴ | 232.3 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 95.8 in³ | 1570 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 149 in³ | 2442 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 2.85 in | 72.4 mm |
| Torsional Constant | J | 78.7 in⁴ | 32757 ×10³ mm⁴ |
| Warping Constant | Cw | 78854.3 in⁶ | 13453.6 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 3.37 in | 85.6 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
2058.8 kip-ft
2793.4 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
660.9 kips
2941.9 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
2.77
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
14.6
✓ Compact Web (λw ≤ 90.5)