Steel Beam Sizes / CISC / WT Tees / WT100×21
WT100×21 Steel Beam Dimensions and Properties
CISC Structural tees · v12.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
WT100×21 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 | 14.00 lb/ft | 21.00 kg/m |
| Depth, d | 4.06 in | 103.00 mm |
| Flange width, bf | 6.54 in | 166.00 mm |
| tw | 0.283 in | 7.200 mm |
| tf | 0.465 in | 11.800 mm |
| Area | 4.12 in² | 2,660.00 mm² |
| Ix | 4.28 in⁴ | 1,780,000 mm⁴ |
| Iy | 10.81 in⁴ | 4,500,000 mm⁴ |
| Sx | 1.29 in³ | 21,200.00 mm³ |
| Sy | 3.31 in³ | 54,200.00 mm³ |
| rx | 1.02 in | 25.90 mm |
| ry | 1.62 in | 41.20 mm |
| J | 0.27 in⁴ | 111,000.00 mm⁴ |
| Cw | 0.23 in⁶ | 61,700,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT100×21.
Lighter in WT100
WT100×18
- Weight
- 18.0 kg/m (-14%)
- Depth
- 101.0 mm (-1.9%)
- Ix
- 1,480,000 mm⁴ (-17%)
Heavier in WT100
WT100×23
- Weight
- 23.0 kg/m (+11%)
- Depth
- 102.0 mm (-1.0%)
- Ix
- 1,790,000 mm⁴ (+0.6%)
Closest Iₓ in WT100
WT100×15.5
- Weight
- 15.5 kg/m (-25%)
- Depth
- 105.0 mm (+1.9%)
- Ix
- 1,630,000 mm⁴ (-8.4%)
Similar weight in WT125
WT125×19.5
- Weight
- 19.5 kg/m (-7.1%)
- Depth
- 131.0 mm (+27%)
- Ix
- 3,260,000 mm⁴ (+83%)
Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Imported; readily available in Canada. · Methodology