AISC 360-22ASTM A992 / A6W18 Series
AISC W18x86 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 | 86 lb/ft | 128 kg/m |
| Cross-Sectional Area | A | 25.3 in² | 16323 mm² |
| Overall Depth | d | 18.4 in | 467.4 mm |
| Flange Width | bf | 11.1 in | 281.9 mm |
| Flange Thickness | tf | 0.77 in | 19.6 mm |
| Web Thickness | tw | 0.48 in | 12.2 mm |
| Flange Centroid Distance | ho | 17.6 in | 447 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 1530 in⁴ | 636.8 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 166 in³ | 2720 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 186 in³ | 3048 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 7.77 in | 197.4 mm |
| Weak-Axis Inertia | Iy | 175 in⁴ | 72.8 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 31.6 in³ | 518 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 48.4 in³ | 793 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 2.63 in | 66.8 mm |
| Torsional Constant | J | 4.1 in⁴ | 1707 ×10³ mm⁴ |
| Warping Constant | Cw | 21405.6 in⁶ | 3652.1 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 3.05 in | 77.5 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
697.5 kip-ft
946.4 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
238.5 kips
1061.5 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
7.21
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
35.1
✓ Compact Web (λw ≤ 90.5)