Steel Beam Sizes / AISC / HSS Rectangular / HSS 20x12x7/8
HSS 20x12x7/8 Dimensions, Weight and Section Properties
AISC Rectangular HSS · v16.0
HSS 20x12x7/8: 173.43 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
HSS 20x12x7/8 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 | 173.43 lb/ft | 258.00 kg/m |
| Height | 20.00 in | 508.00 mm |
| Width | 12.00 in | 305.00 mm |
| Nominal tw | 0.875 in | 22.200 mm |
| Design tw | 0.814 in | 20.700 mm |
| Area | 47.70 in² | 30,800.00 mm² |
| Ix | 2,480.00 in⁴ | 1,030,000,000 mm⁴ |
| Iy | 1,110.00 in⁴ | 462,000,000 mm⁴ |
| Sx | 248.00 in³ | 4,060,000 mm³ |
| Sy | 186.00 in³ | 3,050,000 mm³ |
| Zx | 308.00 in³ | 5,050,000 mm³ |
| Zy | 216.00 in³ | 3,540,000 mm³ |
| rx | 7.20 in | 183.00 mm |
| ry | 4.83 in | 123.00 mm |
| J | 2,530.00 in⁴ | 1,050,000,000 mm⁴ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus HSS 20x12x7/8.
Lighter in Rectangular HSS
HSS 20x16x3/4
- Weight
- 171.2 lb/ft (-1.3%)
- Depth
- 20.00 in (0.0%)
- Ix
- 2,710.0 in⁴ (+9.3%)
Heavier in Rectangular HSS
HSS 24x20x5/8
- Weight
- 178.4 lb/ft (+2.9%)
- Depth
- 24.00 in (+20%)
- Ix
- 4,220.0 in⁴ (+70%)
Another Iₓ option in Rectangular HSS
HSS 24x18x3/8
- Weight
- 104.0 lb/ft (-40%)
- Depth
- 24.00 in (+20%)
- Ix
- 2,450.0 in⁴ (-1.2%)
Source: AISC Shapes Database v16.0 · Methodology