AISC 360-22ASTM A992 / A6W40 Series
AISC W40x249 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 | 249 lb/ft | 370.6 kg/m |
| Cross-Sectional Area | A | 73.5 in² | 47419 mm² |
| Overall Depth | d | 39.4 in | 1000.8 mm |
| Flange Width | bf | 15.8 in | 401.3 mm |
| Flange Thickness | tf | 1.42 in | 36.1 mm |
| Web Thickness | tw | 0.75 in | 19 mm |
| Flange Centroid Distance | ho | 38 in | 965.2 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 19600 in⁴ | 8158.1 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 993 in³ | 16272 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 1120 in³ | 18354 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 16.3 in | 414 mm |
| Weak-Axis Inertia | Iy | 926 in⁴ | 385.4 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 118 in³ | 1934 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 182 in³ | 2982 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 3.55 in | 90.2 mm |
| Torsional Constant | J | 38.1 in⁴ | 15858 ×10³ mm⁴ |
| Warping Constant | Cw | 525695.4 in⁶ | 89691 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 4.21 in | 106.9 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
4200 kip-ft
5698.8 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
797.8 kips
3551.7 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
5.56
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
48.7
✓ Compact Web (λw ≤ 90.5)