Steel Beam Sizes / AISC / WT Tees / WT18x123.5

WT18x123.5 Steel Beam Dimensions and Properties

AISC Structural tees · v16.0

Analyze in Beam Calculator Back to WT Tees

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

Units

Section diagram

WT18x123.5 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 123.50 lb/ft 184.00 kg/m
Depth, d 18.30 in 465.00 mm
Flange width, bf 16.50 in 419.00 mm
tw 0.800 in 20.300 mm
tf 1.350 in 34.300 mm
Area 36.30 in² 23,400.00 mm²
Ix 1,040.00 in⁴ 433,000,000 mm⁴
Iy 507.00 in⁴ 211,000,000 mm⁴
Sx 73.30 in³ 1,200,000 mm³
Sy 61.40 in³ 1,010,000 mm³
Zx 129.00 in³ 2,110,000 mm³
Zy 94.80 in³ 1,550,000 mm³
rx 5.36 in 136.00 mm
ry 3.74 in 95.00 mm
J 17.30 in⁴ 7,200,000 mm⁴
Cw 155.00 in⁶ 41,600,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT18x123.5.

Lighter in WT18

WT18x116

Weight
116.0 lb/ft (-6.1%)
Depth
18.60 in (+1.6%)
Ix
1,080.0 in⁴ (+3.8%)

Heavier in WT18

WT18x128

Weight
128.0 lb/ft (+3.6%)
Depth
18.70 in (+2.2%)
Ix
1,210.0 in⁴ (+16%)

Closest Iₓ in WT18

WT18x105

Weight
105.0 lb/ft (-15%)
Depth
18.30 in (0.0%)
Ix
985.0 in⁴ (-5.3%)

Similar weight in WT20

WT20x124.5

Weight
124.5 lb/ft (+0.8%)
Depth
19.70 in (+7.7%)
Ix
1,210.0 in⁴ (+16%)
Analyze in Beam Calculator Compare in WT Tees finder

Source: AISC Shapes Database v16.0 · Methodology