AISC 360-22ASTM A992 / A6W12 Series
AISC W12x279 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 | 279 lb/ft | 415.2 kg/m |
| Cross-Sectional Area | A | 81.9 in² | 52839 mm² |
| Overall Depth | d | 15.9 in | 403.9 mm |
| Flange Width | bf | 13.1 in | 332.7 mm |
| Flange Thickness | tf | 2.47 in | 62.7 mm |
| Web Thickness | tw | 1.53 in | 38.9 mm |
| Flange Centroid Distance | ho | 13.4 in | 340.4 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 3110 in⁴ | 1294.5 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 393 in³ | 6440 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 481 in³ | 7882 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 6.16 in | 156.5 mm |
| Weak-Axis Inertia | Iy | 937 in⁴ | 390 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 143 in³ | 2343 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 220 in³ | 3605 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 3.38 in | 85.9 mm |
| Torsional Constant | J | 143 in⁴ | 59521 ×10³ mm⁴ |
| Warping Constant | Cw | 66105.4 in⁶ | 11278.5 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 4 in | 101.6 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
1803.8 kip-ft
2447.4 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
656.8 kips
2923.9 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
2.65
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
7.2
✓ Compact Web (λw ≤ 90.5)