Steel Beam Sizes / AISC / Angles / L12x12x1-1/4

L12x12x1-1/4 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

L12x12x1-1/4 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 96.40 lb/ft 143.00 kg/m
Width 12.00 in 305.00 mm
Height 12.00 in 305.00 mm
t 1.250 in 31.800 mm
Area 28.40 in² 18,300.00 mm²
Ix 381.00 in⁴ 159,000,000 mm⁴
Iy 381.00 in⁴ 159,000,000 mm⁴
Sx 44.60 in³ 731,000.00 mm³
Sy 44.60 in³ 731,000.00 mm³
Zx 80.70 in³ 1,320,000 mm³
Zy 80.70 in³ 1,320,000 mm³
rx 3.66 in 93.00 mm
ry 3.66 in 93.00 mm
J 14.90 in⁴ 6,200,000 mm⁴
Cw 160.00 in⁶ 43,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus L12x12x1-1/4.

Lighter in L12

L12x12x1-1/8

Weight
87.2 lb/ft (-9.5%)
Depth
12.00 in (0.0%)
Ix
350.0 in⁴ (-8.1%)

Heavier in L12

L12x12x1-3/8

Weight
105.0 lb/ft (+8.9%)
Depth
12.00 in (0.0%)
Ix
413.0 in⁴ (+8.4%)

Closest Iₓ in L12

L12x12x1

Weight
77.8 lb/ft (-19%)
Depth
12.00 in (0.0%)
Ix
315.0 in⁴ (-17%)

Similar weight in L10

L10x10x1-3/8

Weight
87.1 lb/ft (-9.6%)
Depth
10.00 in (-17%)
Ix
231.0 in⁴ (-39%)
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Source: AISC Shapes Database v16.0 · Methodology