Steel Beam Sizes / AISC / WT Tees / WT20x139

WT20x139 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

WT20x139 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 139.00 lb/ft 208.00 kg/m
Depth, d 20.10 in 511.00 mm
Flange width, bf 12.00 in 305.00 mm
tw 1.030 in 26.200 mm
tf 1.810 in 46.000 mm
Area 41.00 in² 26,500.00 mm²
Ix 1,550.00 in⁴ 645,000,000 mm⁴
Iy 261.00 in⁴ 109,000,000 mm⁴
Sx 106.00 in³ 1,740,000 mm³
Sy 43.50 in³ 713,000.00 mm³
Zx 191.00 in³ 3,130,000 mm³
Zy 69.90 in³ 1,150,000 mm³
rx 6.14 in 156.00 mm
ry 2.52 in 64.00 mm
J 32.40 in⁴ 13,500,000 mm⁴
Cw 282.00 in⁶ 75,700,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT20x139.

Lighter in WT20

WT20x138.5

Weight
138.5 lb/ft (-0.4%)
Depth
19.80 in (-1.5%)
Ix
1,360.0 in⁴ (-12%)

Heavier in WT20

WT20x147

Weight
147.0 lb/ft (+5.8%)
Depth
20.20 in (+0.5%)
Ix
1,630.0 in⁴ (+5.2%)

Closest Iₓ in WT20

WT20x148.5

Weight
148.5 lb/ft (+6.8%)
Depth
19.90 in (-1.0%)
Ix
1,500.0 in⁴ (-3.2%)

Similar weight in WT18

WT18x141

Weight
141.0 lb/ft (+1.4%)
Depth
18.60 in (-7.5%)
Ix
1,190.0 in⁴ (-23%)
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Source: AISC Shapes Database v16.0 · Methodology