AISC 360-22ASTM A992 / A6W8 Series
AISC W8x58 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 | 58 lb/ft | 86.3 kg/m |
| Cross-Sectional Area | A | 17.1 in² | 11032 mm² |
| Overall Depth | d | 8.75 in | 222.3 mm |
| Flange Width | bf | 8.22 in | 208.8 mm |
| Flange Thickness | tf | 0.81 in | 20.6 mm |
| Web Thickness | tw | 0.51 in | 13 mm |
| Flange Centroid Distance | ho | 7.94 in | 201.7 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 228 in⁴ | 94.9 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 52 in³ | 852 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 59.8 in³ | 980 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 3.65 in | 92.7 mm |
| Weak-Axis Inertia | Iy | 75.1 in⁴ | 31.3 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 18.3 in³ | 300 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 27.9 in³ | 457 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 2.1 in | 53.3 mm |
| Torsional Constant | J | 3.33 in⁴ | 1386 ×10³ mm⁴ |
| Warping Constant | Cw | 1857.2 in⁶ | 316.9 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 2.39 in | 60.7 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
224.3 kip-ft
304.3 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
120.5 kips
536.4 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
5.07
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
14
✓ Compact Web (λw ≤ 90.5)