Steel Beam Sizes / CISC / WT Tees / WT100×18
WT100×18 Steel Beam Dimensions and Properties
CISC Structural tees · v12.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
WT100×18 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 | 12.00 lb/ft | 18.00 kg/m |
| Depth, d | 3.98 in | 101.00 mm |
| Flange width, bf | 6.50 in | 165.00 mm |
| tw | 0.244 in | 6.200 mm |
| tf | 0.402 in | 10.200 mm |
| Area | 3.55 in² | 2,290.00 mm² |
| Ix | 3.56 in⁴ | 1,480,000 mm⁴ |
| Iy | 9.18 in⁴ | 3,820,000 mm⁴ |
| Sx | 1.08 in³ | 17,700.00 mm³ |
| Sy | 2.83 in³ | 46,300.00 mm³ |
| rx | 1.00 in | 25.40 mm |
| ry | 1.61 in | 40.90 mm |
| J | 0.17 in⁴ | 72,500.00 mm⁴ |
| Cw | 0.14 in⁶ | 38,900,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT100×18.
Lighter in WT100
WT100×15.5
- Weight
- 15.5 kg/m (-13%)
- Depth
- 105.0 mm (+4.0%)
- Ix
- 1,630,000 mm⁴ (+10%)
Heavier in WT100
WT100×21
- Weight
- 21.0 kg/m (+17%)
- Depth
- 103.0 mm (+2.0%)
- Ix
- 1,780,000 mm⁴ (+20%)
Closest Iₓ in WT100
WT100×13.5
- Weight
- 13.5 kg/m (-25%)
- Depth
- 104.0 mm (+3.0%)
- Ix
- 1,430,000 mm⁴ (-3.4%)
Similar weight in WT75
WT75×18.5
- Weight
- 18.5 kg/m (+4.2%)
- Depth
- 81.0 mm (-20%)
- Ix
- 947,000 mm⁴ (-36%)
Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Imported; readily available in Canada. · Methodology