Steel Beam Sizes / AISC / Double Angles / 2L8x4x7/8x3/4LLBB

2L8x4x7/8x3/4LLBB 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

2L8x4x7/8x3/4LLBB 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 66.20 lb/ft 98.60 kg/m
Width 4.00 in 102.00 mm
Height 8.00 in 203.00 mm
t 0.875 in 22.200 mm
Area 19.60 in² 12,600.00 mm²
Ix 125.00 in⁴ 52,000,000 mm⁴
Sx 25.00 in³ 410,000.00 mm³
rx 2.53 in 64.30 mm

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 2L8x4x7/8x3/4LLBB.

Lighter in Double angles

2L8x8x5/8

Weight
65.4 lb/ft (-1.2%)
Depth
8.00 in (0.0%)
Ix
119.0 in⁴ (-4.8%)

Heavier in Double angles

2L8x6x3/4LLBB

Weight
67.6 lb/ft (+2.1%)
Depth
8.00 in (0.0%)
Ix
127.0 in⁴ (+1.6%)

Closest Iₓ in Double angles

2L8x4x7/8LLBB

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