Steel Beam Sizes / AISC / W-Shapes / W21 / W21x248

W21x248 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

W21x248 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 248.00 lb/ft 369.00 kg/m
Depth, d 23.70 in 602.00 mm
Flange width, bf 12.80 in 325.00 mm
tw 1.100 in 27.900 mm
tf 1.990 in 50.500 mm
Area 73.80 in² 47,600.00 mm²
Ix 6,830.00 in⁴ 2,840,000,000 mm⁴
Iy 699.00 in⁴ 291,000,000 mm⁴
Sx 576.00 in³ 9,440,000 mm³
Sy 109.00 in³ 1,790,000 mm³
Zx 671.00 in³ 11,000,000 mm³
Zy 170.00 in³ 2,790,000 mm³
rx 9.62 in 244.00 mm
ry 3.08 in 78.20 mm
J 80.70 in⁴ 33,600,000 mm⁴
Cw 82,400.00 in⁶ 22,100,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W21x248.

Browse W21 series →

Lighter in W21

W21x223

Weight
223.0 lb/ft (-10%)
Depth
23.40 in (-1.3%)
Ix
6,080.0 in⁴ (-11%)

Heavier in W21

W21x275

Weight
275.0 lb/ft (+11%)
Depth
24.10 in (+1.7%)
Ix
7,690.0 in⁴ (+13%)

Closest Iₓ in W21

W21x201

Weight
201.0 lb/ft (-19%)
Depth
23.00 in (-3.0%)
Ix
5,310.0 in⁴ (-22%)

Similar weight in W24

W24x250

Weight
250.0 lb/ft (+0.8%)
Depth
26.30 in (+11%)
Ix
8,490.0 in⁴ (+24%)
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Source: AISC Shapes Database v16.0 · Methodology