Steel Beam Sizes / AISC / WT Tees / WT4x9
WT4x9 Dimensions, Weight and Section Properties
AISC Structural tees · v16.0
WT4x9: 4.07 in depth, 5.25 in flange width, 9 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
WT4x9 dimensions
Not to scale. Dimensions shown for reference.
Section properties
Symbols match the steel section finder. Imperial and metric values are shown side by side.
| Property | Imperial | Metric |
|---|---|---|
| Weight | 9.00 lb/ft | 13.30 kg/m |
| Depth, d | 4.07 in | 103.00 mm |
| Flange width, bf | 5.25 in | 133.00 mm |
| tw | 0.230 in | 5.840 mm |
| tf | 0.330 in | 8.380 mm |
| Area | 2.63 in² | 1,700.00 mm² |
| Ix | 3.41 in⁴ | 1,420,000 mm⁴ |
| Iy | 3.98 in⁴ | 1,660,000 mm⁴ |
| Sx | 1.05 in³ | 17,200.00 mm³ |
| Sy | 1.52 in³ | 24,900.00 mm³ |
| Zx | 1.86 in³ | 30,500.00 mm³ |
| Zy | 2.33 in³ | 38,200.00 mm³ |
| rx | 1.14 in | 29.00 mm |
| ry | 1.23 in | 31.20 mm |
| J | 0.09 in⁴ | 35,600.00 mm⁴ |
| Cw | 0.06 in⁶ | 15,100,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus WT4x9.
Lighter in WT4
WT4x7.5
- Weight
- 7.5 lb/ft (-17%)
- Depth
- 4.06 in (-0.2%)
- Ix
- 3.3 in⁴ (-3.8%)
Heavier in WT4
WT4x10.5
- Weight
- 10.5 lb/ft (+17%)
- Depth
- 4.14 in (+1.7%)
- Ix
- 3.9 in⁴ (+14%)
Another Iₓ option in WT4
WT4x12
- Weight
- 12.0 lb/ft (+33%)
- Depth
- 3.97 in (-2.5%)
- Ix
- 3.5 in⁴ (+3.5%)
Similar weight in WT5
WT5x8.5
- Weight
- 8.5 lb/ft (-5.6%)
- Depth
- 5.06 in (+24%)
- Ix
- 6.1 in⁴ (+78%)
Source: AISC Shapes Database v16.0 · Methodology