AISC 360-22ASTM A992 / A6W8 Series
AISC W8x28 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 | 28 lb/ft | 41.7 kg/m |
| Cross-Sectional Area | A | 8.25 in² | 5323 mm² |
| Overall Depth | d | 8.06 in | 204.7 mm |
| Flange Width | bf | 6.54 in | 166.1 mm |
| Flange Thickness | tf | 0.465 in | 11.8 mm |
| Web Thickness | tw | 0.285 in | 7.2 mm |
| Flange Centroid Distance | ho | 7.6 in | 193 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 98 in⁴ | 40.8 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 24.3 in³ | 398 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 27.2 in³ | 446 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 3.45 in | 87.6 mm |
| Weak-Axis Inertia | Iy | 21.7 in⁴ | 9 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 6.6 in³ | 109 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 10.1 in³ | 166 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 1.62 in | 41.1 mm |
| Torsional Constant | J | 0.537 in⁴ | 224 ×10³ mm⁴ |
| Warping Constant | Cw | 491.1 in⁶ | 83.8 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 1.84 in | 46.7 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
102 kip-ft
138.4 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
62 kips
276.1 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
7.03
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
25
✓ Compact Web (λw ≤ 90.5)