AISC 360-22ASTM A992 / A6W30 Series
AISC W30x99 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 | 99 lb/ft | 147.3 kg/m |
| Cross-Sectional Area | A | 29 in² | 18710 mm² |
| Overall Depth | d | 29.7 in | 754.4 mm |
| Flange Width | bf | 10.5 in | 266.7 mm |
| Flange Thickness | tf | 0.67 in | 17 mm |
| Web Thickness | tw | 0.52 in | 13.2 mm |
| Flange Centroid Distance | ho | 29 in | 736.6 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 3990 in⁴ | 1660.8 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 269 in³ | 4408 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 312 in³ | 5113 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 11.7 in | 297.2 mm |
| Weak-Axis Inertia | Iy | 128 in⁴ | 53.3 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 24.5 in³ | 401 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 38.6 in³ | 633 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 2.1 in | 53.3 mm |
| Torsional Constant | J | 3.77 in⁴ | 1569 ×10³ mm⁴ |
| Warping Constant | Cw | 42181.5 in⁶ | 7196.8 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 2.62 in | 66.5 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
1170 kip-ft
1587.5 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
417 kips
1856.3 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
7.84
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
54.5
✓ Compact Web (λw ≤ 90.5)