Steel Beam Sizes / AISC / WT Tees / WT18x80
WT18x80 Dimensions, Weight and Section Properties
AISC Structural tees · v16.0
WT18x80: 18 in depth, 12 in flange width, 80 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
WT18x80 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 | 80.00 lb/ft | 119.00 kg/m |
| Depth, d | 18.00 in | 457.00 mm |
| Flange width, bf | 12.00 in | 305.00 mm |
| tw | 0.650 in | 16.500 mm |
| tf | 1.020 in | 25.900 mm |
| Area | 23.50 in² | 15,200.00 mm² |
| Ix | 740.00 in⁴ | 308,000,000 mm⁴ |
| Iy | 147.00 in⁴ | 61,200,000 mm⁴ |
| Sx | 55.80 in³ | 914,000.00 mm³ |
| Sy | 24.60 in³ | 403,000.00 mm³ |
| Zx | 100.00 in³ | 1,640,000 mm³ |
| Zy | 38.60 in³ | 633,000.00 mm³ |
| rx | 5.61 in | 142.00 mm |
| ry | 2.50 in | 63.50 mm |
| J | 6.17 in⁴ | 2,570,000 mm⁴ |
| Cw | 53.60 in⁶ | 14,400,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus WT18x80.
Lighter in WT18
WT18x75
- Weight
- 75.0 lb/ft (-6.3%)
- Depth
- 17.90 in (-0.6%)
- Ix
- 698.0 in⁴ (-5.7%)
Heavier in WT18
WT18x85
- Weight
- 85.0 lb/ft (+6.3%)
- Depth
- 18.10 in (+0.6%)
- Ix
- 786.0 in⁴ (+6.2%)
Another Iₓ option in WT18
WT18x67.5
- Weight
- 67.5 lb/ft (-16%)
- Depth
- 17.80 in (-1.1%)
- Ix
- 637.0 in⁴ (-14%)
Similar weight in WT20
WT20x83.5
- Weight
- 83.5 lb/ft (+4.4%)
- Depth
- 19.30 in (+7.2%)
- Ix
- 899.0 in⁴ (+21%)
Source: AISC Shapes Database v16.0 · Methodology