AISC 360-22ASTM A992 / A6W40 Series
AISC W40x264 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 | 264 lb/ft | 392.9 kg/m |
| Cross-Sectional Area | A | 77.4 in² | 49935 mm² |
| Overall Depth | d | 40 in | 1016 mm |
| Flange Width | bf | 11.9 in | 302.3 mm |
| Flange Thickness | tf | 1.73 in | 43.9 mm |
| Web Thickness | tw | 0.96 in | 24.4 mm |
| Flange Centroid Distance | ho | 38.3 in | 972.8 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 19400 in⁴ | 8074.9 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 971 in³ | 15912 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 1130 in³ | 18517 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 15.8 in | 401.3 mm |
| Weak-Axis Inertia | Iy | 493 in⁴ | 205.2 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 82.6 in³ | 1354 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 132 in³ | 2163 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 2.52 in | 64 mm |
| Torsional Constant | J | 56.1 in⁴ | 23351 ×10³ mm⁴ |
| Warping Constant | Cw | 284882.8 in⁶ | 48605 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 3.12 in | 79.2 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
4237.5 kip-ft
5749.6 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
1036.8 kips
4615.4 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
3.44
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
38.1
✓ Compact Web (λw ≤ 90.5)