Steel Beam Sizes / CISC / W-Shapes / W310×342

W310×342 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

W310×342 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 230.00 lb/ft 342.00 kg/m
Depth, d 15.04 in 382.00 mm
Flange width, bf 12.91 in 328.00 mm
tw 1.283 in 32.600 mm
tf 2.071 in 52.600 mm
Area 67.74 in² 43,700.00 mm²
Ix 2,426.53 in⁴ 1,010,000,000 mm⁴
Iy 744.78 in⁴ 310,000,000 mm⁴
Sx 320.98 in³ 5,260,000 mm³
Sy 115.33 in³ 1,890,000 mm³
Zx 386.28 in³ 6,330,000 mm³
Zy 177.58 in³ 2,910,000 mm³
rx 5.98 in 152.00 mm
ry 3.31 in 84.20 mm
J 83.85 in⁴ 34,900,000 mm⁴
Cw 31,355.22 in⁶ 8,420,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W310×342.

Lighter in W310

W310×313

Weight
313.0 kg/m (-8.7%)
Depth
374.0 mm (-2.1%)
Ix
896,000,000 mm⁴ (-11%)

Heavier in W310

W310×375

Weight
375.0 kg/m (+9.6%)
Depth
391.0 mm (+2.4%)
Ix
1,130,000,000 mm⁴ (+12%)

Closest Iₓ in W310

W310×283

Weight
283.0 kg/m (-17%)
Depth
365.0 mm (-4.5%)
Ix
787,000,000 mm⁴ (-22%)

Similar weight in W360

W360×347

Weight
347.0 kg/m (+1.3%)
Depth
407.0 mm (+6.5%)
Ix
1,250,000,000 mm⁴ (+24%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Not produced in Canada. · Methodology