Steel Beam Sizes / AISC / Angles / L3x3x5/16

L3x3x5/16 Steel Beam Dimensions and Properties

AISC Angles · v16.0

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

Units

Section diagram

L3x3x5/16 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 6.10 lb/ft 9.10 kg/m
Width 3.00 in 76.20 mm
Height 3.00 in 76.20 mm
t 0.313 in 7.940 mm
Area 1.78 in² 1,150.00 mm²
Ix 1.50 in⁴ 624,000.00 mm⁴
Iy 1.50 in⁴ 624,000.00 mm⁴
Sx 0.70 in³ 11,500.00 mm³
Sy 0.70 in³ 11,500.00 mm³
Zx 1.26 in³ 20,600.00 mm³
Zy 1.26 in³ 20,600.00 mm³
rx 0.92 in 23.30 mm
ry 0.92 in 23.30 mm
J 0.06 in⁴ 24,800.00 mm⁴
Cw 0.04 in⁶ 10,500,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus L3x3x5/16.

Lighter in L3

L3x2x3/8

Weight
5.9 lb/ft (-3.3%)
Depth
2.00 in (-33%)
Ix
1.5 in⁴ (+2.7%)

Heavier in L3

L3-1/2x3x5/16

Weight
6.6 lb/ft (+8.2%)
Depth
3.00 in (0.0%)
Ix
2.3 in⁴ (+55%)

Closest Iₓ in L3

L3x2-1/2x5/16

Weight
5.6 lb/ft (-8.2%)
Depth
2.50 in (-17%)
Ix
1.4 in⁴ (-6.0%)

Similar weight in L4

L4x3-1/2x1/4

Weight
6.2 lb/ft (+1.6%)
Depth
3.50 in (+17%)
Ix
2.9 in⁴ (+93%)
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Source: AISC Shapes Database v16.0 · Methodology