AISC 360-22ASTM A992 / A6W21 Series
AISC W21x83 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 | 83 lb/ft | 123.5 kg/m |
| Cross-Sectional Area | A | 24.4 in² | 15742 mm² |
| Overall Depth | d | 21.4 in | 543.6 mm |
| Flange Width | bf | 8.36 in | 212.3 mm |
| Flange Thickness | tf | 0.835 in | 21.2 mm |
| Web Thickness | tw | 0.515 in | 13.1 mm |
| Flange Centroid Distance | ho | 20.6 in | 523.2 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 1830 in⁴ | 761.7 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 171 in³ | 2802 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 196 in³ | 3212 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 8.67 in | 220.2 mm |
| Weak-Axis Inertia | Iy | 81.4 in⁴ | 33.9 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 19.5 in³ | 320 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 30.5 in³ | 500 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 1.83 in | 46.5 mm |
| Torsional Constant | J | 4.34 in⁴ | 1806 ×10³ mm⁴ |
| Warping Constant | Cw | 13583.1 in⁶ | 2317.5 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 2.21 in | 56.1 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
735 kip-ft
997.3 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
297.6 kips
1324.7 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
5.01
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
38.3
✓ Compact Web (λw ≤ 90.5)