Steel Beam Sizes / AISC / WT Tees / WT18x115.5

WT18x115.5 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

WT18x115.5 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 115.50 lb/ft 172.00 kg/m
Depth, d 18.20 in 464.00 mm
Flange width, bf 16.50 in 419.00 mm
tw 0.760 in 19.300 mm
tf 1.260 in 32.000 mm
Area 34.10 in² 22,000.00 mm²
Ix 978.00 in⁴ 407,000,000 mm⁴
Iy 470.00 in⁴ 196,000,000 mm⁴
Sx 69.10 in³ 1,130,000 mm³
Sy 57.00 in³ 934,000.00 mm³
Zx 122.00 in³ 2,000,000 mm³
Zy 88.00 in³ 1,440,000 mm³
rx 5.36 in 136.00 mm
ry 3.71 in 94.20 mm
J 14.30 in⁴ 5,950,000 mm⁴
Cw 129.00 in⁶ 34,600,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT18x115.5.

Lighter in WT18

WT18x105

Weight
105.0 lb/ft (-9.1%)
Depth
18.30 in (+0.5%)
Ix
985.0 in⁴ (+0.7%)

Heavier in WT18

WT18x116

Weight
116.0 lb/ft (+0.4%)
Depth
18.60 in (+2.2%)
Ix
1,080.0 in⁴ (+10%)

Closest Iₓ in WT18

WT18x123.5

Weight
123.5 lb/ft (+6.9%)
Depth
18.30 in (+0.5%)
Ix
1,040.0 in⁴ (+6.3%)

Similar weight in WT20

WT20x117.5

Weight
117.5 lb/ft (+1.7%)
Depth
19.80 in (+8.8%)
Ix
1,260.0 in⁴ (+29%)
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Source: AISC Shapes Database v16.0 · Methodology