Steel Beam Sizes / AISC / Double Angles / 2L3-1/2x3x1/2SLBB

2L3-1/2x3x1/2SLBB 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

2L3-1/2x3x1/2SLBB 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 20.40 lb/ft 30.20 kg/m
Width 3.50 in 88.90 mm
Height 3.00 in 76.20 mm
t 0.500 in 12.700 mm
Area 6.04 in² 3,900.00 mm²
Ix 4.65 in⁴ 1,940,000 mm⁴
Sx 2.18 in³ 35,700.00 mm³
rx 0.88 in 22.30 mm

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 2L3-1/2x3x1/2SLBB.

Lighter in Double angles

2L3-1/2x3-1/2x7/16

Weight
19.6 lb/ft (-3.9%)
Depth
3.50 in (+17%)
Ix
6.5 in⁴ (+40%)

Heavier in Double angles

2L5x5x5/16

Weight
20.6 lb/ft (+1.0%)
Depth
5.00 in (+67%)
Ix
14.9 in⁴ (+220%)

Closest Iₓ in Double angles

2L3-1/2x3x1/2x3/4SLBB

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