Steel Beam Sizes / AISC / WT Tees / WT12x81

WT12x81 Steel Beam Dimensions and Properties

AISC Structural tees · v16.0

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

Units

Section diagram

WT12x81 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 81.00 lb/ft 121.00 kg/m
Depth, d 12.50 in 318.00 mm
Flange width, bf 13.00 in 330.00 mm
tw 0.705 in 17.900 mm
tf 1.220 in 31.000 mm
Area 23.90 in² 15,400.00 mm²
Ix 293.00 in⁴ 122,000,000 mm⁴
Iy 221.00 in⁴ 92,000,000 mm⁴
Sx 29.90 in³ 490,000.00 mm³
Sy 34.20 in³ 560,000.00 mm³
Zx 53.30 in³ 873,000.00 mm³
Zy 52.60 in³ 862,000.00 mm³
rx 3.50 in 88.90 mm
ry 3.05 in 77.50 mm
J 9.22 in⁴ 3,840,000 mm⁴
Cw 43.80 in⁶ 11,800,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT12x81.

Lighter in WT12

WT12x73

Weight
73.0 lb/ft (-9.9%)
Depth
12.40 in (-0.8%)
Ix
264.0 in⁴ (-9.9%)

Heavier in WT12

WT12x88

Weight
88.0 lb/ft (+8.6%)
Depth
12.60 in (+0.8%)
Ix
319.0 in⁴ (+8.9%)

Closest Iₓ in WT12

WT12x65.5

Weight
65.5 lb/ft (-19%)
Depth
12.20 in (-2.4%)
Ix
238.0 in⁴ (-19%)

Similar weight in WT13

WT13.5x80.5

Weight
80.5 lb/ft (-0.6%)
Depth
13.80 in (+10%)
Ix
372.0 in⁴ (+27%)
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Source: AISC Shapes Database v16.0 · Methodology