Steel Beam Sizes / AISC / WT Tees / WT20x181
WT20x181 Dimensions, Weight and Section Properties
AISC Structural tees · v16.0
WT20x181: 20.3 in depth, 16 in flange width, 181 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
WT20x181 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 | 181.00 lb/ft | 270.00 kg/m |
| Depth, d | 20.30 in | 516.00 mm |
| Flange width, bf | 16.00 in | 406.00 mm |
| tw | 1.120 in | 28.400 mm |
| tf | 2.010 in | 51.100 mm |
| Area | 53.20 in² | 34,300.00 mm² |
| Ix | 1,870.00 in⁴ | 778,000,000 mm⁴ |
| Iy | 691.00 in⁴ | 288,000,000 mm⁴ |
| Sx | 122.00 in³ | 2,000,000 mm³ |
| Sy | 86.30 in³ | 1,410,000 mm³ |
| Zx | 217.00 in³ | 3,560,000 mm³ |
| Zy | 135.00 in³ | 2,210,000 mm³ |
| rx | 5.92 in | 150.00 mm |
| ry | 3.60 in | 91.40 mm |
| J | 54.20 in⁴ | 22,600,000 mm⁴ |
| Cw | 511.00 in⁶ | 137,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus WT20x181.
Lighter in WT20
WT20x165.5
- Weight
- 165.5 lb/ft (-8.6%)
- Depth
- 20.40 in (+0.5%)
- Ix
- 1,880.0 in⁴ (+0.5%)
Heavier in WT20
WT20x186
- Weight
- 186.0 lb/ft (+2.8%)
- Depth
- 20.30 in (0.0%)
- Ix
- 1,930.0 in⁴ (+3.2%)
Another Iₓ option in WT20
WT20x163.5
- Weight
- 163.5 lb/ft (-9.7%)
- Depth
- 20.40 in (+0.5%)
- Ix
- 1,840.0 in⁴ (-1.6%)
Similar weight in WT18
WT18x180.5
- Weight
- 180.5 lb/ft (-0.3%)
- Depth
- 19.00 in (-6.4%)
- Ix
- 1,570.0 in⁴ (-16%)
Source: AISC Shapes Database v16.0 · Methodology