Steel Beam Sizes / AISC / W-Shapes / W18 / W18x234

W18x234 Steel Beam Dimensions and Properties

AISC Wide flange · v16.0

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

Units

Section diagram

W18x234 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 234.00 lb/ft 349.00 kg/m
Depth, d 21.10 in 536.00 mm
Flange width, bf 11.70 in 297.00 mm
tw 1.160 in 29.500 mm
tf 2.110 in 53.600 mm
Area 68.60 in² 44,300.00 mm²
Ix 4,900.00 in⁴ 2,040,000,000 mm⁴
Iy 558.00 in⁴ 232,000,000 mm⁴
Sx 466.00 in³ 7,640,000 mm³
Sy 95.80 in³ 1,570,000 mm³
Zx 549.00 in³ 9,000,000 mm³
Zy 149.00 in³ 2,440,000 mm³
rx 8.44 in 214.00 mm
ry 2.85 in 72.40 mm
J 78.70 in⁴ 32,800,000 mm⁴
Cw 50,100.00 in⁶ 13,500,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W18x234.

Browse W18 series →

Lighter in W18

W18x211

Weight
211.0 lb/ft (-9.8%)
Depth
20.70 in (-1.9%)
Ix
4,330.0 in⁴ (-12%)

Heavier in W18

W18x258

Weight
258.0 lb/ft (+10%)
Depth
21.50 in (+1.9%)
Ix
5,510.0 in⁴ (+12%)

Closest Iₓ in W18

W18x192

Weight
192.0 lb/ft (-18%)
Depth
20.40 in (-3.3%)
Ix
3,870.0 in⁴ (-21%)

Similar weight in W21

W21x223

Weight
223.0 lb/ft (-4.7%)
Depth
23.40 in (+11%)
Ix
6,080.0 in⁴ (+24%)
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Source: AISC Shapes Database v16.0 · Methodology