Steel Beam Sizes / CISC / WT Tees / WT380×128.5
WT380×128.5 Steel Beam Dimensions and Properties
CISC Structural tees · v12.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
WT380×128.5 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 | 86.50 lb/ft | 128.50 kg/m |
| Depth, d | 15.24 in | 387.00 mm |
| Flange width, bf | 15.00 in | 381.00 mm |
| tw | 0.654 in | 16.600 mm |
| tf | 1.067 in | 27.100 mm |
| Area | 25.58 in² | 16,500.00 mm² |
| Ix | 497.32 in⁴ | 207,000,000 mm⁴ |
| Iy | 300.31 in⁴ | 125,000,000 mm⁴ |
| Sx | 41.74 in³ | 684,000.00 mm³ |
| Sy | 40.09 in³ | 657,000.00 mm³ |
| rx | 4.41 in | 112.00 mm |
| ry | 3.43 in | 87.10 mm |
| J | 7.81 in⁴ | 3,250,000 mm⁴ |
| Cw | 53.25 in⁶ | 14,300,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT380×128.5.
Lighter in WT380
WT380×98
- Weight
- 98.0 kg/m (-24%)
- Depth
- 385.0 mm (-0.5%)
- Ix
- 175,000,000 mm⁴ (-15%)
Heavier in WT380
WT380×142
- Weight
- 142.0 kg/m (+10%)
- Depth
- 390.0 mm (+0.8%)
- Ix
- 229,000,000 mm⁴ (+11%)
Closest Iₓ in WT380
WT380×92.5
- Weight
- 92.5 kg/m (-28%)
- Depth
- 383.0 mm (-1.0%)
- Ix
- 165,000,000 mm⁴ (-20%)
Similar weight in WT345
WT345×132.5
- Weight
- 132.5 kg/m (+2.9%)
- Depth
- 353.0 mm (-8.8%)
- Ix
- 172,000,000 mm⁴ (-17%)
Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Not produced in Canada. · Methodology