AISC 360-22ASTM A992 / A6W27 Series
AISC W27x258 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 | 258 lb/ft | 383.9 kg/m |
| Cross-Sectional Area | A | 76.1 in² | 49097 mm² |
| Overall Depth | d | 29 in | 736.6 mm |
| Flange Width | bf | 14.3 in | 363.2 mm |
| Flange Thickness | tf | 1.77 in | 45 mm |
| Web Thickness | tw | 0.98 in | 24.9 mm |
| Flange Centroid Distance | ho | 27.2 in | 690.9 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 10800 in⁴ | 4495.3 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 745 in³ | 12208 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 852 in³ | 13962 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 11.9 in | 302.3 mm |
| Weak-Axis Inertia | Iy | 859 in⁴ | 357.5 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 120 in³ | 1966 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 187 in³ | 3064 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 3.36 in | 85.3 mm |
| Torsional Constant | J | 61.6 in⁴ | 25640 ×10³ mm⁴ |
| Warping Constant | Cw | 250256.2 in⁶ | 42697.2 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 3.96 in | 100.6 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
3195 kip-ft
4335.1 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
767.3 kips
3415.9 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
4.04
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
26
✓ Compact Web (λw ≤ 90.5)