AISC 360-22ASTM A992 / A6W18 Series
AISC W18x175 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 | 175 lb/ft | 260.4 kg/m |
| Cross-Sectional Area | A | 51.4 in² | 33161 mm² |
| Overall Depth | d | 20 in | 508 mm |
| Flange Width | bf | 11.4 in | 289.6 mm |
| Flange Thickness | tf | 1.59 in | 40.4 mm |
| Web Thickness | tw | 0.89 in | 22.6 mm |
| Flange Centroid Distance | ho | 18.4 in | 467.4 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 3450 in⁴ | 1436 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 344 in³ | 5637 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 398 in³ | 6522 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 8.2 in | 208.3 mm |
| Weak-Axis Inertia | Iy | 391 in⁴ | 162.7 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 68.8 in³ | 1127 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 106 in³ | 1737 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 2.76 in | 70.1 mm |
| Torsional Constant | J | 33.8 in⁴ | 14069 ×10³ mm⁴ |
| Warping Constant | Cw | 52412.1 in⁶ | 8942.2 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 3.24 in | 82.3 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
1492.5 kip-ft
2025.1 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
480.6 kips
2139.4 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
3.58
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
18.9
✓ Compact Web (λw ≤ 90.5)