Steel Beam Sizes / AISC / HSS Rectangular / HSS 20x12x3/4
HSS 20x12x3/4 Dimensions, Weight and Section Properties
AISC Rectangular HSS · v16.0
HSS 20x12x3/4: 150.75 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
HSS 20x12x3/4 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 | 150.75 lb/ft | 224.00 kg/m |
| Height | 20.00 in | 508.00 mm |
| Width | 12.00 in | 305.00 mm |
| Nominal tw | 0.750 in | 19.100 mm |
| Design tw | 0.698 in | 17.700 mm |
| Area | 41.50 in² | 26,800.00 mm² |
| Ix | 2,190.00 in⁴ | 911,000,000 mm⁴ |
| Iy | 988.00 in⁴ | 411,000,000 mm⁴ |
| Sx | 219.00 in³ | 3,590,000 mm³ |
| Sy | 165.00 in³ | 2,700,000 mm³ |
| Zx | 270.00 in³ | 4,430,000 mm³ |
| Zy | 190.00 in³ | 3,110,000 mm³ |
| rx | 7.26 in | 184.00 mm |
| ry | 4.88 in | 124.00 mm |
| J | 2,220.00 in⁴ | 924,000,000 mm⁴ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus HSS 20x12x3/4.
Lighter in Rectangular HSS
HSS 16x12x7/8
- Weight
- 149.6 lb/ft (-0.8%)
- Depth
- 16.00 in (-20%)
- Ix
- 1,430.0 in⁴ (-35%)
Heavier in Rectangular HSS
HSS 22x16x5/8
- Weight
- 152.9 lb/ft (+1.4%)
- Depth
- 22.00 in (+10%)
- Ix
- 2,910.0 in⁴ (+33%)
Another Iₓ option in Rectangular HSS
HSS 22x14x1/2
- Weight
- 116.9 lb/ft (-22%)
- Depth
- 22.00 in (+10%)
- Ix
- 2,170.0 in⁴ (-0.9%)
Source: AISC Shapes Database v16.0 · Methodology