AISC 360-22ASTM A992 / A6W33 Series
AISC W33x318 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 | 318 lb/ft | 473.2 kg/m |
| Cross-Sectional Area | A | 93.7 in² | 60451 mm² |
| Overall Depth | d | 35.2 in | 894.1 mm |
| Flange Width | bf | 16 in | 406.4 mm |
| Flange Thickness | tf | 1.89 in | 48 mm |
| Web Thickness | tw | 1.04 in | 26.4 mm |
| Flange Centroid Distance | ho | 33.3 in | 845.8 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 19500 in⁴ | 8116.5 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 1110 in³ | 18190 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 1270 in³ | 20812 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 14.5 in | 368.3 mm |
| Weak-Axis Inertia | Iy | 1290 in⁴ | 536.9 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 161 in³ | 2638 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 250 in³ | 4097 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 3.71 in | 94.2 mm |
| Torsional Constant | J | 84.4 in⁴ | 35130 ×10³ mm⁴ |
| Warping Constant | Cw | 561895.9 in⁶ | 95867.3 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 4.4 in | 111.8 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
4762.5 kip-ft
6462 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
988.4 kips
4400 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
4.23
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
30.2
✓ Compact Web (λw ≤ 90.5)