Steel Beam Sizes / CISC / WT Tees / WT125×12.5

WT125×12.5 Steel Beam Dimensions and Properties

CISC Structural tees · v12.1

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

Units

Section diagram

WT125×12.5 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 8.50 lb/ft 12.50 kg/m
Depth, d 5.08 in 129.00 mm
Flange width, bf 4.02 in 102.00 mm
tw 0.240 in 6.100 mm
tf 0.331 in 8.400 mm
Area 2.51 in² 1,620.00 mm²
Ix 6.15 in⁴ 2,560,000 mm⁴
Iy 1.79 in⁴ 746,000.00 mm⁴
Sx 1.64 in³ 26,800.00 mm³
Sy 0.89 in³ 14,600.00 mm³
rx 1.57 in 39.80 mm
ry 0.85 in 21.50 mm
J 0.08 in⁴ 32,500.00 mm⁴
Cw 0.06 in⁶ 16,600,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT125×12.5.

Lighter in WT125

WT125×11

Weight
11.0 kg/m (-12%)
Depth
127.0 mm (-1.6%)
Ix
2,270,000 mm⁴ (-11%)

Heavier in WT125

WT125×14

Weight
14.0 kg/m (+12%)
Depth
130.0 mm (+0.8%)
Ix
2,790,000 mm⁴ (+9.0%)

Closest Iₓ in WT125

WT125×16.5

Weight
16.5 kg/m (+29%)
Depth
129.0 mm (0.0%)
Ix
2,850,000 mm⁴ (+11%)

Similar weight in WT155

WT155×12

Weight
12.0 kg/m (-5.9%)
Depth
153.0 mm (+19%)
Ix
3,670,000 mm⁴ (+43%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Imported; readily available in Canada. · Methodology