Steel Beam Sizes / AISC / W-Shapes / W21 / W21x248
W21x248 Dimensions, Weight and Section Properties
AISC Wide flange · v16.0
W21x248: 23.7 in depth, 12.8 in flange width, 248 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
W21x248 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 | 248.00 lb/ft | 369.00 kg/m |
| Depth, d | 23.70 in | 602.00 mm |
| Flange width, bf | 12.80 in | 325.00 mm |
| tw | 1.100 in | 27.900 mm |
| tf | 1.990 in | 50.500 mm |
| Area | 73.80 in² | 47,600.00 mm² |
| Ix | 6,830.00 in⁴ | 2,840,000,000 mm⁴ |
| Iy | 699.00 in⁴ | 291,000,000 mm⁴ |
| Sx | 576.00 in³ | 9,440,000 mm³ |
| Sy | 109.00 in³ | 1,790,000 mm³ |
| Zx | 671.00 in³ | 11,000,000 mm³ |
| Zy | 170.00 in³ | 2,790,000 mm³ |
| rx | 9.62 in | 244.00 mm |
| ry | 3.08 in | 78.20 mm |
| J | 80.70 in⁴ | 33,600,000 mm⁴ |
| Cw | 82,400.00 in⁶ | 22,100,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus W21x248.
Lighter in W21
W21x223
- Weight
- 223.0 lb/ft (-10%)
- Depth
- 23.40 in (-1.3%)
- Ix
- 6,080.0 in⁴ (-11%)
Heavier in W21
W21x275
- Weight
- 275.0 lb/ft (+11%)
- Depth
- 24.10 in (+1.7%)
- Ix
- 7,690.0 in⁴ (+13%)
Another Iₓ option in W21
W21x201
- Weight
- 201.0 lb/ft (-19%)
- Depth
- 23.00 in (-3.0%)
- Ix
- 5,310.0 in⁴ (-22%)
Similar weight in W24
W24x250
- Weight
- 250.0 lb/ft (+0.8%)
- Depth
- 26.30 in (+11%)
- Ix
- 8,490.0 in⁴ (+24%)
Source: AISC Shapes Database v16.0 · Methodology