Steel Beam Sizes / CISC / HSS Square / HS305×305×7.9
HS305×305×7.9 Dimensions, Weight and Section Properties
CISC Square HSS · v12.1
HS305×305×7.9: 72.7 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
HS305×305×7.9 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 | 48.90 lb/ft | 72.70 kg/m |
| Height | 12.00 in | 304.80 mm |
| Width | 12.00 in | 304.80 mm |
| Nominal tw | 0.313 in | 7.940 mm |
| Design tw | 0.313 in | 7.940 mm |
| Area | 14.37 in² | 9,270.00 mm² |
| Ix | 324.34 in⁴ | 135,000,000 mm⁴ |
| Iy | 324.34 in⁴ | 135,000,000 mm⁴ |
| Sx | 54.01 in³ | 885,000.00 mm³ |
| Sy | 54.01 in³ | 885,000.00 mm³ |
| Zx | 62.85 in³ | 1,030,000 mm³ |
| Zy | 62.85 in³ | 1,030,000 mm³ |
| rx | 4.76 in | 121.00 mm |
| ry | 4.76 in | 121.00 mm |
| J | 506.93 in⁴ | 211,000,000 mm⁴ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus HS305×305×7.9.
Lighter in Square HSS
HA254×254×9.5
- Weight
- 71.3 kg/m (-2.0%)
- Depth
- 254.0 mm (-17%)
- Ix
- 81,700,000 mm⁴ (-39%)
Heavier in Square HSS
HA178×178×16
- Weight
- 75.6 kg/m (+3.9%)
- Depth
- 177.8 mm (-42%)
- Ix
- 38,100,000 mm⁴ (-72%)
Another Iₓ option in Square HSS
HS254×254×16
- Weight
- 114.0 kg/m (+56%)
- Depth
- 254.0 mm (-17%)
- Ix
- 134,000,000 mm⁴ (-0.7%)
Source: CISC Structural Section Tables SST12.1 · v12.1 · CSA G40 · Methodology