Steel Beam Sizes / AISC / W-Shapes / W40 / W40x277
W40x277 Dimensions, Weight and Section Properties
AISC Wide flange · v16.0
W40x277: 39.7 in depth, 15.8 in flange width, 277 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
W40x277 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 | 277.00 lb/ft | 412.00 kg/m |
| Depth, d | 39.70 in | 1,010.00 mm |
| Flange width, bf | 15.80 in | 401.00 mm |
| tw | 0.830 in | 21.100 mm |
| tf | 1.580 in | 40.100 mm |
| Area | 81.50 in² | 52,600.00 mm² |
| Ix | 21,900.00 in⁴ | 9,120,000,000 mm⁴ |
| Iy | 1,040.00 in⁴ | 433,000,000 mm⁴ |
| Sx | 1,100.00 in³ | 18,000,000 mm³ |
| Sy | 132.00 in³ | 2,160,000 mm³ |
| Zx | 1,250.00 in³ | 20,500,000 mm³ |
| Zy | 204.00 in³ | 3,340,000 mm³ |
| rx | 16.40 in | 417.00 mm |
| ry | 3.58 in | 90.90 mm |
| J | 51.50 in⁴ | 21,400,000 mm⁴ |
| Cw | 379,000.00 in⁶ | 102,000,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus W40x277.
Lighter in W40
W40x264
- Weight
- 264.0 lb/ft (-4.7%)
- Depth
- 40.00 in (+0.8%)
- Ix
- 19,400.0 in⁴ (-11%)
Heavier in W40
W40x278
- Weight
- 278.0 lb/ft (+0.4%)
- Depth
- 40.20 in (+1.3%)
- Ix
- 20,500.0 in⁴ (-6.4%)
Another Iₓ option in W40
W40x294
- Weight
- 294.0 lb/ft (+6.1%)
- Depth
- 40.40 in (+1.8%)
- Ix
- 21,900.0 in⁴ (0.0%)
Similar weight in W36
W36x282
- Weight
- 282.0 lb/ft (+1.8%)
- Depth
- 37.10 in (-6.5%)
- Ix
- 19,600.0 in⁴ (-11%)
Source: AISC Shapes Database v16.0 · Methodology