Steel Beam Sizes / AISC / WT Tees / WT12x81
WT12x81 Dimensions, Weight and Section Properties
AISC Structural tees · v16.0
WT12x81: 12.5 in depth, 13 in flange width, 81 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
WT12x81 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 | 81.00 lb/ft | 121.00 kg/m |
| Depth, d | 12.50 in | 318.00 mm |
| Flange width, bf | 13.00 in | 330.00 mm |
| tw | 0.705 in | 17.900 mm |
| tf | 1.220 in | 31.000 mm |
| Area | 23.90 in² | 15,400.00 mm² |
| Ix | 293.00 in⁴ | 122,000,000 mm⁴ |
| Iy | 221.00 in⁴ | 92,000,000 mm⁴ |
| Sx | 29.90 in³ | 490,000.00 mm³ |
| Sy | 34.20 in³ | 560,000.00 mm³ |
| Zx | 53.30 in³ | 873,000.00 mm³ |
| Zy | 52.60 in³ | 862,000.00 mm³ |
| rx | 3.50 in | 88.90 mm |
| ry | 3.05 in | 77.50 mm |
| J | 9.22 in⁴ | 3,840,000 mm⁴ |
| Cw | 43.80 in⁶ | 11,800,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus WT12x81.
Lighter in WT12
WT12x73
- Weight
- 73.0 lb/ft (-9.9%)
- Depth
- 12.40 in (-0.8%)
- Ix
- 264.0 in⁴ (-9.9%)
Heavier in WT12
WT12x88
- Weight
- 88.0 lb/ft (+8.6%)
- Depth
- 12.60 in (+0.8%)
- Ix
- 319.0 in⁴ (+8.9%)
Another Iₓ option in WT12
WT12x65.5
- Weight
- 65.5 lb/ft (-19%)
- Depth
- 12.20 in (-2.4%)
- Ix
- 238.0 in⁴ (-19%)
Similar weight in WT13
WT13.5x80.5
- Weight
- 80.5 lb/ft (-0.6%)
- Depth
- 13.80 in (+10%)
- Ix
- 372.0 in⁴ (+27%)
Source: AISC Shapes Database v16.0 · Methodology