Steel Beam Sizes / AISC / Double Angles / 2L8x4x3/4LLBB
2L8x4x3/4LLBB Dimensions, Weight and Section Properties
AISC Double angles · v16.0
2L8x4x3/4LLBB: 8 in depth, 57.4 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
2L8x4x3/4LLBB 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 | 57.40 lb/ft | 85.40 kg/m |
| Width | 4.00 in | 102.00 mm |
| Height | 8.00 in | 203.00 mm |
| t | 0.750 in | 19.100 mm |
| Area | 17.00 in² | 11,000.00 mm² |
| Ix | 110.00 in⁴ | 45,800,000 mm⁴ |
| Iy | 34.30 in⁴ | 14,300,000 mm⁴ |
| Sx | 21.80 in³ | 357,000.00 mm³ |
| rx | 2.55 in | 64.80 mm |
| ry | 1.42 in | 36.10 mm |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus 2L8x4x3/4LLBB.
Lighter in Double angles
2L8x6x5/8LLBB
- Weight
- 57.0 lb/ft (-0.7%)
- Depth
- 8.00 in (0.0%)
- Ix
- 108.0 in⁴ (-1.8%)
Heavier in Double angles
2L8x8x9/16
- Weight
- 59.2 lb/ft (+3.1%)
- Depth
- 8.00 in (0.0%)
- Ix
- 108.0 in⁴ (-1.8%)
Another Iₓ option in Double angles
2L8x4x3/4x3/4LLBB
- Weight
- 57.4 lb/ft (0.0%)
- Depth
- 8.00 in (0.0%)
- Ix
- 110.0 in⁴ (0.0%)
Source: AISC Shapes Database v16.0 · Methodology