Steel Beam Sizes / AISC / Double Angles / 2L8x4x5/8x3/8LLBB

2L8x4x5/8x3/8LLBB 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

2L8x4x5/8x3/8LLBB 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 48.40 lb/ft 72.00 kg/m
Width 4.00 in 102.00 mm
Height 8.00 in 203.00 mm
t 0.625 in 15.900 mm
Area 14.30 in² 9,230.00 mm²
Ix 94.00 in⁴ 39,100,000 mm⁴
Sx 18.40 in³ 302,000.00 mm³
rx 2.56 in 65.00 mm

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 2L8x4x5/8x3/8LLBB.

Lighter in Double angles

2L5x5x3/4

Weight
47.2 lb/ft (-2.5%)
Depth
5.00 in (-38%)
Ix
31.4 in⁴ (-67%)

Heavier in Double angles

2L8x6x9/16LLBB

Weight
51.4 lb/ft (+6.2%)
Depth
8.00 in (0.0%)
Ix
98.8 in⁴ (+5.1%)

Closest Iₓ in Double angles

2L8x4x5/8LLBB

Weight
48.4 lb/ft (0.0%)
Depth
8.00 in (0.0%)
Ix
94.0 in⁴ (0.0%)
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Source: AISC Shapes Database v16.0 · Methodology