Steel Beam Sizes / CISC / W-Shapes / W310×79
W310×79 Dimensions, Weight and Section Properties
CISC Wide flange · v12.1
W310×79: 306 mm depth, 254 mm flange width, 79 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
W310×79 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 | 53.00 lb/ft | 79.00 kg/m |
| Depth, d | 12.05 in | 306.00 mm |
| Flange width, bf | 10.00 in | 254.00 mm |
| tw | 0.346 in | 8.800 mm |
| tf | 0.575 in | 14.600 mm |
| Area | 15.50 in² | 10,000.00 mm² |
| Ix | 425.24 in⁴ | 177,000,000 mm⁴ |
| Iy | 95.86 in⁴ | 39,900,000 mm⁴ |
| Sx | 70.18 in³ | 1,150,000 mm³ |
| Sy | 19.16 in³ | 314,000.00 mm³ |
| Zx | 78.11 in³ | 1,280,000 mm³ |
| Zy | 29.17 in³ | 478,000.00 mm³ |
| rx | 5.24 in | 133.00 mm |
| ry | 2.48 in | 63.00 mm |
| J | 1.57 in⁴ | 655,000.00 mm⁴ |
| Cw | 3,154.14 in⁶ | 847,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus W310×79.
Lighter in W310
W310×74
- Weight
- 74.0 kg/m (-5.7%)
- Depth
- 310.0 mm (+1.3%)
- Ix
- 164,000,000 mm⁴ (-7.3%)
Heavier in W310
W310×86
- Weight
- 86.0 kg/m (+9.4%)
- Depth
- 310.0 mm (+1.3%)
- Ix
- 198,000,000 mm⁴ (+12%)
Another Iₓ option in W310
W310×67
- Weight
- 67.0 kg/m (-15%)
- Depth
- 306.0 mm (0.0%)
- Ix
- 144,000,000 mm⁴ (-19%)
Similar weight in W360
W360×79
- Weight
- 79.0 kg/m (0.0%)
- Depth
- 354.0 mm (+16%)
- Ix
- 226,000,000 mm⁴ (+28%)
Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Imported; readily available in Canada. · Methodology