Steel Beam Sizes / CISC / Channels / C310×31

C310×31 Steel Beam Dimensions and Properties

CISC Channels · v12.1

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

Units

Section diagram

C310×31 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 20.70 lb/ft 31.00 kg/m
Depth, d 12.01 in 305.00 mm
Flange width, bf 2.91 in 74.00 mm
tw 0.283 in 7.200 mm
tf 0.500 in 12.700 mm
Area 6.08 in² 3,920.00 mm²
Ix 128.53 in⁴ 53,500,000 mm⁴
Iy 3.82 in⁴ 1,590,000 mm⁴
Sx 21.42 in³ 351,000.00 mm³
Sy 1.71 in³ 28,100.00 mm³
rx 4.61 in 117.00 mm
ry 0.79 in 20.10 mm
J 0.37 in⁴ 152,000.00 mm⁴
Cw 109.11 in⁶ 29,300,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus C310×31.

Heavier in C310

C310×37

Weight
37.0 kg/m (+21%)
Depth
305.0 mm (0.0%)
Ix
59,900,000 mm⁴ (+12%)

Closest Iₓ in C310

C310×45

Weight
45.0 kg/m (+45%)
Depth
305.0 mm (0.0%)
Ix
67,300,000 mm⁴ (+26%)

Similar weight in C250

C250×30

Weight
30.0 kg/m (-3.4%)
Depth
254.0 mm (-17%)
Ix
32,700,000 mm⁴ (-39%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Not produced in Canada. · Methodology