Steel Beam Sizes / CISC / W-Shapes / W310×39

W310×39 Steel Beam Dimensions and Properties

CISC Wide flange · v12.1

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

Units

Section diagram

W310×39 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 26.00 lb/ft 39.00 kg/m
Depth, d 12.20 in 310.00 mm
Flange width, bf 6.50 in 165.00 mm
tw 0.228 in 5.800 mm
tf 0.382 in 9.700 mm
Area 7.66 in² 4,940.00 mm²
Ix 204.45 in⁴ 85,100,000 mm⁴
Iy 17.47 in⁴ 7,270,000 mm⁴
Sx 33.50 in³ 549,000.00 mm³
Sy 5.38 in³ 88,100.00 mm³
Zx 37.22 in³ 610,000.00 mm³
Zy 8.24 in³ 135,000.00 mm³
rx 5.16 in 131.00 mm
ry 1.51 in 38.40 mm
J 0.30 in⁴ 126,000.00 mm⁴
Cw 610.72 in⁶ 164,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W310×39.

Lighter in W310

W310×33

Weight
33.0 kg/m (-15%)
Depth
313.0 mm (+1.0%)
Ix
65,000,000 mm⁴ (-24%)

Heavier in W310

W310×45

Weight
45.0 kg/m (+15%)
Depth
313.0 mm (+1.0%)
Ix
99,200,000 mm⁴ (+17%)

Closest Iₓ in W310

W310×28

Weight
28.0 kg/m (-27%)
Depth
309.0 mm (-0.3%)
Ix
54,300,000 mm⁴ (-36%)

Similar weight in W360

W360×39

Weight
39.0 kg/m (0.0%)
Depth
353.0 mm (+14%)
Ix
102,000,000 mm⁴ (+20%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Imported; readily available in Canada. · Methodology