Steel Beam Sizes / CISC / Channels / C310×31
C310×31 Dimensions, Weight and Section Properties
CISC Channels · v12.1
C310×31: 305 mm depth, 74 mm flange width, 31 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
C310×31 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 | 20.70 lb/ft | 31.00 kg/m |
| Depth, d | 12.01 in | 305.00 mm |
| Flange width, bf | 2.91 in | 74.00 mm |
| tw | 0.283 in | 7.200 mm |
| tf | 0.500 in | 12.700 mm |
| Area | 6.08 in² | 3,920.00 mm² |
| Ix | 128.53 in⁴ | 53,500,000 mm⁴ |
| Iy | 3.82 in⁴ | 1,590,000 mm⁴ |
| Sx | 21.42 in³ | 351,000.00 mm³ |
| Sy | 1.71 in³ | 28,100.00 mm³ |
| rx | 4.61 in | 117.00 mm |
| ry | 0.79 in | 20.10 mm |
| J | 0.37 in⁴ | 152,000.00 mm⁴ |
| Cw | 109.11 in⁶ | 29,300,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus C310×31.
Heavier in C310
C310×37
- Weight
- 37.0 kg/m (+21%)
- Depth
- 305.0 mm (0.0%)
- Ix
- 59,900,000 mm⁴ (+12%)
Another Iₓ option in C310
C310×45
- Weight
- 45.0 kg/m (+45%)
- Depth
- 305.0 mm (0.0%)
- Ix
- 67,300,000 mm⁴ (+26%)
Similar weight in C250
C250×30
- Weight
- 30.0 kg/m (-3.4%)
- Depth
- 254.0 mm (-17%)
- Ix
- 32,700,000 mm⁴ (-39%)
Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Not produced in Canada. · Methodology