Steel Beam Sizes / AISC / Double Angles / 2L8x4x1x3/4SLBB

2L8x4x1x3/4SLBB Steel Beam Dimensions and Properties

AISC Double angles · v16.0

Analyze in Beam Calculator Back to Double Angles

Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

2L8x4x1x3/4SLBB 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 74.80 lb/ft 111.00 kg/m
Width 8.00 in 203.00 mm
Height 4.00 in 102.00 mm
t 1.000 in 25.400 mm
Area 22.20 in² 14,300.00 mm²
Ix 23.30 in⁴ 9,700,000 mm⁴
Sx 7.87 in³ 129,000.00 mm³
rx 1.03 in 26.20 mm

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 2L8x4x1x3/4SLBB.

Lighter in Double angles

2L8x6x3/4LLBB

Weight
67.6 lb/ft (-9.6%)
Depth
8.00 in (+100%)
Ix
127.0 in⁴ (+445%)

Heavier in Double angles

2L8x8x3/4

Weight
77.8 lb/ft (+4.0%)
Depth
8.00 in (+100%)
Ix
140.0 in⁴ (+501%)

Closest Iₓ in Double angles

2L8x4x1SLBB

Weight
74.8 lb/ft (0.0%)
Depth
4.00 in (0.0%)
Ix
23.3 in⁴ (0.0%)
Analyze in Beam Calculator Compare in Double Angles finder

Source: AISC Shapes Database v16.0 · Methodology