Steel Beam Sizes / CISC / W-Shapes / W310×79

W310×79 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

W310×79 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 53.00 lb/ft 79.00 kg/m
Depth, d 12.05 in 306.00 mm
Flange width, bf 10.00 in 254.00 mm
tw 0.346 in 8.800 mm
tf 0.575 in 14.600 mm
Area 15.50 in² 10,000.00 mm²
Ix 425.24 in⁴ 177,000,000 mm⁴
Iy 95.86 in⁴ 39,900,000 mm⁴
Sx 70.18 in³ 1,150,000 mm³
Sy 19.16 in³ 314,000.00 mm³
Zx 78.11 in³ 1,280,000 mm³
Zy 29.17 in³ 478,000.00 mm³
rx 5.24 in 133.00 mm
ry 2.48 in 63.00 mm
J 1.57 in⁴ 655,000.00 mm⁴
Cw 3,154.14 in⁶ 847,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W310×79.

Lighter in W310

W310×74

Weight
74.0 kg/m (-5.7%)
Depth
310.0 mm (+1.3%)
Ix
164,000,000 mm⁴ (-7.3%)

Heavier in W310

W310×86

Weight
86.0 kg/m (+9.4%)
Depth
310.0 mm (+1.3%)
Ix
198,000,000 mm⁴ (+12%)

Closest Iₓ in W310

W310×67

Weight
67.0 kg/m (-15%)
Depth
306.0 mm (0.0%)
Ix
144,000,000 mm⁴ (-19%)

Similar weight in W360

W360×79

Weight
79.0 kg/m (0.0%)
Depth
354.0 mm (+16%)
Ix
226,000,000 mm⁴ (+28%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Imported; readily available in Canada. · Methodology