AISC 360-22ASTM A992 / A6W27 Series
AISC W27x178 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 | 178 lb/ft | 264.9 kg/m |
| Cross-Sectional Area | A | 52.5 in² | 33871 mm² |
| Overall Depth | d | 27.8 in | 706.1 mm |
| Flange Width | bf | 14.1 in | 358.1 mm |
| Flange Thickness | tf | 1.19 in | 30.2 mm |
| Web Thickness | tw | 0.725 in | 18.4 mm |
| Flange Centroid Distance | ho | 26.6 in | 675.6 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 7020 in⁴ | 2921.9 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 505 in³ | 8275 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 570 in³ | 9341 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 11.6 in | 294.6 mm |
| Weak-Axis Inertia | Iy | 555 in⁴ | 231 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 78.8 in³ | 1291 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 122 in³ | 1999 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 3.25 in | 82.6 mm |
| Torsional Constant | J | 20.1 in⁴ | 8366 ×10³ mm⁴ |
| Warping Constant | Cw | 154875.5 in⁶ | 26423.9 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 3.83 in | 97.3 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
2137.5 kip-ft
2900.3 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
544.2 kips
2422.5 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
5.92
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
35.1
✓ Compact Web (λw ≤ 90.5)