Steel Beam Sizes / AISC / S-Shapes / S24x121

S24x121 Steel Beam Dimensions and Properties

AISC American standard beams · v16.0

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

Units

Section diagram

S24x121 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 121.00 lb/ft 180.00 kg/m
Depth, d 24.50 in 622.00 mm
Flange width, bf 8.05 in 204.00 mm
tw 0.800 in 20.300 mm
tf 1.090 in 27.700 mm
Area 35.50 in² 22,900.00 mm²
Ix 3,160.00 in⁴ 1,320,000,000 mm⁴
Iy 83.00 in⁴ 34,500,000 mm⁴
Sx 258.00 in³ 4,230,000 mm³
Sy 20.60 in³ 338,000.00 mm³
Zx 306.00 in³ 5,010,000 mm³
Zy 36.30 in³ 595,000.00 mm³
rx 9.43 in 240.00 mm
ry 1.53 in 38.90 mm
J 12.80 in⁴ 5,330,000 mm⁴
Cw 11,400.00 in⁶ 3,060,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus S24x121.

Lighter in S24

S24x106

Weight
106.0 lb/ft (-12%)
Depth
24.50 in (0.0%)
Ix
2,940.0 in⁴ (-7.0%)

Closest Iₓ in S24

S24x100

Weight
100.0 lb/ft (-17%)
Depth
24.00 in (-2.0%)
Ix
2,380.0 in⁴ (-25%)

Similar weight in S20

S20x96

Weight
96.0 lb/ft (-21%)
Depth
20.30 in (-17%)
Ix
1,670.0 in⁴ (-47%)
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Source: AISC Shapes Database v16.0 · Methodology