Steel Beam Sizes / AISC / WT Tees / WT18x85

WT18x85 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

WT18x85 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 85.00 lb/ft 127.00 kg/m
Depth, d 18.10 in 460.00 mm
Flange width, bf 12.00 in 305.00 mm
tw 0.680 in 17.300 mm
tf 1.100 in 27.900 mm
Area 25.00 in² 16,100.00 mm²
Ix 786.00 in⁴ 327,000,000 mm⁴
Iy 160.00 in⁴ 66,600,000 mm⁴
Sx 58.90 in³ 965,000.00 mm³
Sy 26.60 in³ 436,000.00 mm³
Zx 105.00 in³ 1,720,000 mm³
Zy 41.80 in³ 685,000.00 mm³
rx 5.61 in 142.00 mm
ry 2.53 in 64.30 mm
J 7.51 in⁴ 3,130,000 mm⁴
Cw 63.20 in⁶ 17,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT18x85.

Lighter in WT18

WT18x80

Weight
80.0 lb/ft (-5.9%)
Depth
18.00 in (-0.6%)
Ix
740.0 in⁴ (-5.9%)

Heavier in WT18

WT18x91

Weight
91.0 lb/ft (+7.1%)
Depth
18.20 in (+0.6%)
Ix
845.0 in⁴ (+7.5%)

Closest Iₓ in WT18

WT18x75

Weight
75.0 lb/ft (-12%)
Depth
17.90 in (-1.1%)
Ix
698.0 in⁴ (-11%)

Similar weight in WT16

WT16.5x84.5

Weight
84.5 lb/ft (-0.6%)
Depth
16.90 in (-6.6%)
Ix
649.0 in⁴ (-17%)
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Source: AISC Shapes Database v16.0 · Methodology