AISC 360-22ASTM A992 / A6W18 Series
AISC W18x106 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 | 106 lb/ft | 157.7 kg/m |
| Cross-Sectional Area | A | 31.1 in² | 20064 mm² |
| Overall Depth | d | 18.7 in | 475 mm |
| Flange Width | bf | 11.2 in | 284.5 mm |
| Flange Thickness | tf | 0.94 in | 23.9 mm |
| Web Thickness | tw | 0.59 in | 15 mm |
| Flange Centroid Distance | ho | 17.8 in | 452.1 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 1910 in⁴ | 795 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 204 in³ | 3343 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 230 in³ | 3769 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 7.84 in | 199.1 mm |
| Weak-Axis Inertia | Iy | 220 in⁴ | 91.6 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 39.4 in³ | 646 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 60.5 in³ | 991 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 2.66 in | 67.6 mm |
| Torsional Constant | J | 7.48 in⁴ | 3113 ×10³ mm⁴ |
| Warping Constant | Cw | 27386.5 in⁶ | 4672.5 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 3.1 in | 78.7 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
862.5 kip-ft
1170.3 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
297.9 kips
1326.1 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
5.96
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
28.5
✓ Compact Web (λw ≤ 90.5)