AISC 360-22ASTM A992 / A6W18 Series
AISC W18x35 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 | 35 lb/ft | 52.1 kg/m |
| Cross-Sectional Area | A | 10.3 in² | 6645 mm² |
| Overall Depth | d | 17.7 in | 449.6 mm |
| Flange Width | bf | 6 in | 152.4 mm |
| Flange Thickness | tf | 0.425 in | 10.8 mm |
| Web Thickness | tw | 0.3 in | 7.6 mm |
| Flange Centroid Distance | ho | 17.3 in | 439.4 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 510 in⁴ | 212.3 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 57.6 in³ | 944 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 66.5 in³ | 1090 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 7.04 in | 178.8 mm |
| Weak-Axis Inertia | Iy | 15.3 in⁴ | 6.4 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 5.1 in³ | 84 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 8.1 in³ | 132 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 1.22 in | 31 mm |
| Torsional Constant | J | 0.506 in⁴ | 211 ×10³ mm⁴ |
| Warping Constant | Cw | 1794.3 in⁶ | 306.1 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 1.51 in | 38.4 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
249.4 kip-ft
338.4 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
143.4 kips
638.2 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
7.06
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
56.2
✓ Compact Web (λw ≤ 90.5)