Steel Beam Sizes / AISC / Double Angles / 2L4x3-1/2x1/4x3/4LLBB

2L4x3-1/2x1/4x3/4LLBB 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

2L4x3-1/2x1/4x3/4LLBB 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 12.40 lb/ft 18.40 kg/m
Width 3.50 in 88.90 mm
Height 4.00 in 102.00 mm
t 0.250 in 6.350 mm
Area 3.64 in² 2,350.00 mm²
Ix 5.78 in⁴ 2,410,000 mm⁴
Sx 2.02 in³ 33,100.00 mm³
rx 1.26 in 32.00 mm

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 2L4x3-1/2x1/4x3/4LLBB.

Lighter in Double angles

2L3-1/2x2-1/2x5/16LLBB

Weight
12.2 lb/ft (-1.6%)
Depth
3.50 in (-13%)
Ix
4.4 in⁴ (-24%)

Heavier in Double angles

2L3-1/2x3x5/16LLBB

Weight
13.2 lb/ft (+6.5%)
Depth
3.50 in (-13%)
Ix
4.7 in⁴ (-19%)

Closest Iₓ in Double angles

2L4x3-1/2x1/4LLBB

Weight
12.4 lb/ft (0.0%)
Depth
4.00 in (0.0%)
Ix
5.8 in⁴ (0.0%)
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Source: AISC Shapes Database v16.0 · Methodology