Steel Beam Sizes / AISC / WT Tees / WT18x128

WT18x128 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

WT18x128 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 128.00 lb/ft 191.00 kg/m
Depth, d 18.70 in 475.00 mm
Flange width, bf 12.20 in 310.00 mm
tw 0.960 in 24.400 mm
tf 1.730 in 43.900 mm
Area 37.60 in² 24,300.00 mm²
Ix 1,210.00 in⁴ 504,000,000 mm⁴
Iy 264.00 in⁴ 110,000,000 mm⁴
Sx 87.40 in³ 1,430,000 mm³
Sy 43.20 in³ 708,000.00 mm³
Zx 156.00 in³ 2,560,000 mm³
Zy 68.50 in³ 1,120,000 mm³
rx 5.66 in 144.00 mm
ry 2.65 in 67.30 mm
J 26.40 in⁴ 11,000,000 mm⁴
Cw 205.00 in⁶ 55,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT18x128.

Lighter in WT18

WT18x123.5

Weight
123.5 lb/ft (-3.5%)
Depth
18.30 in (-2.1%)
Ix
1,040.0 in⁴ (-14%)

Heavier in WT18

WT18x131

Weight
131.0 lb/ft (+2.3%)
Depth
18.40 in (-1.6%)
Ix
1,110.0 in⁴ (-8.3%)

Closest Iₓ in WT18

WT18x141

Weight
141.0 lb/ft (+10%)
Depth
18.60 in (-0.5%)
Ix
1,190.0 in⁴ (-1.7%)

Similar weight in WT20

WT20x124.5

Weight
124.5 lb/ft (-2.7%)
Depth
19.70 in (+5.3%)
Ix
1,210.0 in⁴ (0.0%)
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Source: AISC Shapes Database v16.0 · Methodology