Steel Beam Sizes / AISC / W-Shapes / W21 / W21x122

W21x122 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

W21x122 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 122.00 lb/ft 182.00 kg/m
Depth, d 21.70 in 551.00 mm
Flange width, bf 12.40 in 315.00 mm
tw 0.600 in 15.200 mm
tf 0.960 in 24.400 mm
Area 35.90 in² 23,200.00 mm²
Ix 2,960.00 in⁴ 1,230,000,000 mm⁴
Iy 305.00 in⁴ 127,000,000 mm⁴
Sx 273.00 in³ 4,470,000 mm³
Sy 49.20 in³ 806,000.00 mm³
Zx 307.00 in³ 5,030,000 mm³
Zy 75.60 in³ 1,240,000 mm³
rx 9.09 in 231.00 mm
ry 2.92 in 74.20 mm
J 8.98 in⁴ 3,740,000 mm⁴
Cw 32,700.00 in⁶ 8,780,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W21x122.

Browse W21 series →

Lighter in W21

W21x111

Weight
111.0 lb/ft (-9.0%)
Depth
21.50 in (-0.9%)
Ix
2,670.0 in⁴ (-9.8%)

Heavier in W21

W21x132

Weight
132.0 lb/ft (+8.2%)
Depth
21.80 in (+0.5%)
Ix
3,220.0 in⁴ (+8.8%)

Closest Iₓ in W21

W21x101

Weight
101.0 lb/ft (-17%)
Depth
21.40 in (-1.4%)
Ix
2,420.0 in⁴ (-18%)

Similar weight in W18

W18x119

Weight
119.0 lb/ft (-2.5%)
Depth
19.00 in (-12%)
Ix
2,190.0 in⁴ (-26%)
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Source: AISC Shapes Database v16.0 · Methodology