Steel Beam Sizes / AISC / Double Angles / 2L4x3x1/2x3/4SLBB

2L4x3x1/2x3/4SLBB 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

2L4x3x1/2x3/4SLBB 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 22.20 lb/ft 33.00 kg/m
Width 4.00 in 102.00 mm
Height 3.00 in 76.20 mm
t 0.500 in 12.700 mm
Area 6.50 in² 4,190.00 mm²
Ix 4.79 in⁴ 1,990,000 mm⁴
Sx 2.20 in³ 36,100.00 mm³
rx 0.86 in 21.80 mm

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 2L4x3x1/2x3/4SLBB.

Lighter in Double angles

2L5x3-1/2x3/8LLBB

Weight
20.8 lb/ft (-6.3%)
Depth
5.00 in (+67%)
Ix
15.5 in⁴ (+224%)

Heavier in Double angles

2L4x4x7/16

Weight
22.6 lb/ft (+1.8%)
Depth
4.00 in (+33%)
Ix
9.9 in⁴ (+106%)

Closest Iₓ in Double angles

2L4x3x1/2SLBB

Weight
22.2 lb/ft (0.0%)
Depth
3.00 in (0.0%)
Ix
4.8 in⁴ (0.0%)
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Source: AISC Shapes Database v16.0 · Methodology