AISC 360-22ASTM A992 / A6W21 Series
AISC W21x201 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 | 201 lb/ft | 299.1 kg/m |
| Cross-Sectional Area | A | 59.3 in² | 38258 mm² |
| Overall Depth | d | 23 in | 584.2 mm |
| Flange Width | bf | 12.6 in | 320 mm |
| Flange Thickness | tf | 1.63 in | 41.4 mm |
| Web Thickness | tw | 0.91 in | 23.1 mm |
| Flange Centroid Distance | ho | 21.4 in | 543.6 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 5310 in⁴ | 2210.2 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 461 in³ | 7554 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 530 in³ | 8685 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 9.47 in | 240.5 mm |
| Weak-Axis Inertia | Iy | 542 in⁴ | 225.6 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 86.1 in³ | 1411 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 133 in³ | 2179 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 3.02 in | 76.7 mm |
| Torsional Constant | J | 40.9 in⁴ | 17024 ×10³ mm⁴ |
| Warping Constant | Cw | 97584.2 in⁶ | 16649.2 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 3.55 in | 90.2 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
1987.5 kip-ft
2696.7 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
565.1 kips
2515.6 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
3.87
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
21.7
✓ Compact Web (λw ≤ 90.5)