Steel Beam Sizes / AISC / WT Tees / WT18x123.5
WT18x123.5 Dimensions, Weight and Section Properties
AISC Structural tees · v16.0
WT18x123.5: 18.3 in depth, 16.5 in flange width, 123.5 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
WT18x123.5 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 | 123.50 lb/ft | 184.00 kg/m |
| Depth, d | 18.30 in | 465.00 mm |
| Flange width, bf | 16.50 in | 419.00 mm |
| tw | 0.800 in | 20.300 mm |
| tf | 1.350 in | 34.300 mm |
| Area | 36.30 in² | 23,400.00 mm² |
| Ix | 1,040.00 in⁴ | 433,000,000 mm⁴ |
| Iy | 507.00 in⁴ | 211,000,000 mm⁴ |
| Sx | 73.30 in³ | 1,200,000 mm³ |
| Sy | 61.40 in³ | 1,010,000 mm³ |
| Zx | 129.00 in³ | 2,110,000 mm³ |
| Zy | 94.80 in³ | 1,550,000 mm³ |
| rx | 5.36 in | 136.00 mm |
| ry | 3.74 in | 95.00 mm |
| J | 17.30 in⁴ | 7,200,000 mm⁴ |
| Cw | 155.00 in⁶ | 41,600,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus WT18x123.5.
Lighter in WT18
WT18x116
- Weight
- 116.0 lb/ft (-6.1%)
- Depth
- 18.60 in (+1.6%)
- Ix
- 1,080.0 in⁴ (+3.8%)
Heavier in WT18
WT18x128
- Weight
- 128.0 lb/ft (+3.6%)
- Depth
- 18.70 in (+2.2%)
- Ix
- 1,210.0 in⁴ (+16%)
Another Iₓ option in WT18
WT18x105
- Weight
- 105.0 lb/ft (-15%)
- Depth
- 18.30 in (0.0%)
- Ix
- 985.0 in⁴ (-5.3%)
Similar weight in WT20
WT20x124.5
- Weight
- 124.5 lb/ft (+0.8%)
- Depth
- 19.70 in (+7.7%)
- Ix
- 1,210.0 in⁴ (+16%)
Source: AISC Shapes Database v16.0 · Methodology