Steel Beam Sizes / AISC / Double Angles / 2L8x4x3/4LLBB

2L8x4x3/4LLBB Steel Beam Dimensions and Properties

AISC Double angles · v16.0

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

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
Sx 21.80 in³ 357,000.00 mm³
rx 2.55 in 64.80 mm

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, 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%)

Closest Iₓ 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%)
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Source: AISC Shapes Database v16.0 · Methodology