Steel Beam Sizes / AISC / Double Angles / 2L8x4x9/16x3/8LLBB

2L8x4x9/16x3/8LLBB 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

2L8x4x9/16x3/8LLBB 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 43.80 lb/ft 65.20 kg/m
Width 4.00 in 102.00 mm
Height 8.00 in 203.00 mm
t 0.563 in 14.300 mm
Area 13.00 in² 8,390.00 mm²
Ix 85.80 in⁴ 35,700,000 mm⁴
Sx 16.70 in³ 274,000.00 mm³
rx 2.57 in 65.30 mm

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 2L8x4x9/16x3/8LLBB.

Lighter in Double angles

2L8x6x7/16LLBB

Weight
40.4 lb/ft (-7.8%)
Depth
8.00 in (0.0%)
Ix
78.6 in⁴ (-8.4%)

Heavier in Double angles

2L7x4x5/8LLBB

Weight
44.2 lb/ft (+0.9%)
Depth
7.00 in (-13%)
Ix
64.8 in⁴ (-24%)

Closest Iₓ in Double angles

2L8x4x9/16LLBB

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