AISC 360-22ASTM A992 / A6W40 Series
AISC W40x331 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 | 331 lb/ft | 492.6 kg/m |
| Cross-Sectional Area | A | 97.7 in² | 63032 mm² |
| Overall Depth | d | 40.8 in | 1036.3 mm |
| Flange Width | bf | 12.2 in | 309.9 mm |
| Flange Thickness | tf | 2.13 in | 54.1 mm |
| Web Thickness | tw | 1.22 in | 31 mm |
| Flange Centroid Distance | ho | 38.7 in | 983 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 24700 in⁴ | 10280.9 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 1210 in³ | 19828 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 1430 in³ | 23434 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 15.9 in | 403.9 mm |
| Weak-Axis Inertia | Iy | 644 in⁴ | 268.1 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 106 in³ | 1737 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 172 in³ | 2819 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 2.57 in | 65.3 mm |
| Torsional Constant | J | 105 in⁴ | 43704 ×10³ mm⁴ |
| Warping Constant | Cw | 379319.1 in⁶ | 64717.1 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 3.21 in | 81.5 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
5362.5 kip-ft
7276.1 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
1344 kips
5982.7 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
2.86
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
30
✓ Compact Web (λw ≤ 90.5)