AISC 360-22ASTM A992 / A6W27 Series
AISC W27x129 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 | 129 lb/ft | 192 kg/m |
| Cross-Sectional Area | A | 37.8 in² | 24387 mm² |
| Overall Depth | d | 27.6 in | 701 mm |
| Flange Width | bf | 10 in | 254 mm |
| Flange Thickness | tf | 1.1 in | 27.9 mm |
| Web Thickness | tw | 0.61 in | 15.5 mm |
| Flange Centroid Distance | ho | 26.5 in | 673.1 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 4760 in⁴ | 1981.3 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 345 in³ | 5654 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 395 in³ | 6473 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 11.2 in | 284.5 mm |
| Weak-Axis Inertia | Iy | 184 in⁴ | 76.6 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 36.8 in³ | 603 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 57.6 in³ | 944 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 2.21 in | 56.1 mm |
| Torsional Constant | J | 11.1 in⁴ | 4620 ×10³ mm⁴ |
| Warping Constant | Cw | 51153 in⁶ | 8727.4 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 2.66 in | 67.6 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
1481.3 kip-ft
2009.8 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
454.6 kips
2023.6 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
4.55
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
41.6
✓ Compact Web (λw ≤ 90.5)