Steel Beam Sizes / CISC / S-Shapes / S310×74
S310×74 Dimensions, Weight and Section Properties
CISC American standard beams · v12.1
S310×74: 305 mm depth, 139 mm flange width, 74 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
S310×74 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 | 50.00 lb/ft | 74.00 kg/m |
| Depth, d | 12.01 in | 305.00 mm |
| Flange width, bf | 5.47 in | 139.00 mm |
| tw | 0.685 in | 17.400 mm |
| tf | 0.657 in | 16.700 mm |
| Area | 14.68 in² | 9,470.00 mm² |
| Ix | 305.12 in⁴ | 127,000,000 mm⁴ |
| Iy | 15.57 in⁴ | 6,480,000 mm⁴ |
| Sx | 50.83 in³ | 833,000.00 mm³ |
| Sy | 5.69 in³ | 93,300.00 mm³ |
| Zx | 61.02 in³ | 1,000,000 mm³ |
| Zy | 10.31 in³ | 169,000.00 mm³ |
| rx | 4.57 in | 116.00 mm |
| ry | 1.03 in | 26.20 mm |
| J | 2.79 in⁴ | 1,160,000 mm⁴ |
| Cw | 502.73 in⁶ | 135,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus S310×74.
Lighter in S310
S310×60.7
- Weight
- 60.7 kg/m (-18%)
- Depth
- 305.0 mm (0.0%)
- Ix
- 113,000,000 mm⁴ (-11%)
Another Iₓ option in S310
S310×52
- Weight
- 52.0 kg/m (-30%)
- Depth
- 305.0 mm (0.0%)
- Ix
- 95,800,000 mm⁴ (-25%)
Similar weight in S380
S380×74
- Weight
- 74.0 kg/m (0.0%)
- Depth
- 381.0 mm (+25%)
- Ix
- 203,000,000 mm⁴ (+60%)
Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Not produced in Canada. · Methodology