Steel Beam Sizes / CISC / S-Shapes / S310×74
S310×74 Steel Beam Dimensions and Properties
CISC American standard beams · v12.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
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
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus S310×74.
Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Not produced in Canada. · Methodology