AISC 360-22ASTM A992 / A6W21 Series
AISC W21x44 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 | 44 lb/ft | 65.5 kg/m |
| Cross-Sectional Area | A | 13 in² | 8387 mm² |
| Overall Depth | d | 20.7 in | 525.8 mm |
| Flange Width | bf | 6.5 in | 165.1 mm |
| Flange Thickness | tf | 0.45 in | 11.4 mm |
| Web Thickness | tw | 0.35 in | 8.9 mm |
| Flange Centroid Distance | ho | 20.3 in | 515.6 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 843 in⁴ | 350.9 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 81.6 in³ | 1337 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 95.4 in³ | 1563 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 8.06 in | 204.7 mm |
| Weak-Axis Inertia | Iy | 20.7 in⁴ | 8.6 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 6.4 in³ | 104 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 10.2 in³ | 167 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 1.26 in | 32 mm |
| Torsional Constant | J | 0.77 in⁴ | 320 ×10³ mm⁴ |
| Warping Constant | Cw | 3321 in⁶ | 566.6 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 1.6 in | 40.6 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
357.8 kip-ft
485.4 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
195.6 kips
870.8 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
7.22
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
56.6
✓ Compact Web (λw ≤ 90.5)