Steel Beam Sizes / AISC / HSS Square / HSS 8x8x5/16
HSS 8x8x5/16 Dimensions, Weight and Section Properties
AISC Square HSS · v16.0
HSS 8x8x5/16: 31.84 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
HSS 8x8x5/16 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 | 31.84 lb/ft | 47.30 kg/m |
| Height | 8.00 in | 203.00 mm |
| Width | 8.00 in | 203.00 mm |
| Nominal tw | 0.313 in | 7.940 mm |
| Design tw | 0.291 in | 7.390 mm |
| Area | 8.76 in² | 5,650.00 mm² |
| Ix | 85.60 in⁴ | 35,600,000 mm⁴ |
| Iy | 85.60 in⁴ | 35,600,000 mm⁴ |
| Sx | 21.40 in³ | 351,000.00 mm³ |
| Sy | 21.40 in³ | 351,000.00 mm³ |
| Zx | 25.10 in³ | 411,000.00 mm³ |
| Zy | 25.10 in³ | 411,000.00 mm³ |
| rx | 3.13 in | 79.50 mm |
| ry | 3.13 in | 79.50 mm |
| J | 136.00 in⁴ | 56,600,000 mm⁴ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus HSS 8x8x5/16.
Lighter in Square HSS
HSS 12x12x3/16
- Weight
- 29.8 lb/ft (-6.3%)
- Depth
- 12.00 in (+50%)
- Ix
- 189.0 in⁴ (+121%)
Heavier in Square HSS
HSS 7x7x3/8
- Weight
- 32.6 lb/ft (+2.3%)
- Depth
- 7.00 in (-13%)
- Ix
- 65.0 in⁴ (-24%)
Another Iₓ option in Square HSS
HSS 7x7x1/2
- Weight
- 42.1 lb/ft (+32%)
- Depth
- 7.00 in (-13%)
- Ix
- 80.5 in⁴ (-6.0%)
Source: AISC Shapes Database v16.0 · Methodology