AISC 360-22ASTM A992 / A6W40 Series
AISC W40x149 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 | 149 lb/ft | 221.7 kg/m |
| Cross-Sectional Area | A | 43.8 in² | 28258 mm² |
| Overall Depth | d | 38.2 in | 970.3 mm |
| Flange Width | bf | 11.8 in | 299.7 mm |
| Flange Thickness | tf | 0.83 in | 21.1 mm |
| Web Thickness | tw | 0.63 in | 16 mm |
| Flange Centroid Distance | ho | 37.4 in | 950 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 9800 in⁴ | 4079.1 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 513 in³ | 8407 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 598 in³ | 9799 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 15 in | 381 mm |
| Weak-Axis Inertia | Iy | 229 in⁴ | 95.3 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 38.8 in³ | 636 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 62.2 in³ | 1019 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 2.29 in | 58.2 mm |
| Torsional Constant | J | 9.36 in⁴ | 3896 ×10³ mm⁴ |
| Warping Constant | Cw | 125915.1 in⁶ | 21482.9 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 2.89 in | 73.4 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
2242.5 kip-ft
3042.7 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
649.8 kips
2892.6 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
7.11
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
58
✓ Compact Web (λw ≤ 90.5)