Steel Beam Sizes / CISC / W-Shapes / W310×45

W310×45 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

W310×45 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 30.00 lb/ft 45.00 kg/m
Depth, d 12.32 in 313.00 mm
Flange width, bf 6.54 in 166.00 mm
tw 0.260 in 6.600 mm
tf 0.441 in 11.200 mm
Area 8.82 in² 5,690.00 mm²
Ix 238.33 in⁴ 99,200,000 mm⁴
Iy 20.54 in⁴ 8,550,000 mm⁴
Sx 38.69 in³ 634,000.00 mm³
Sy 6.29 in³ 103,000.00 mm³
Zx 43.20 in³ 708,000.00 mm³
Zy 9.64 in³ 158,000.00 mm³
rx 5.20 in 132.00 mm
ry 1.53 in 38.80 mm
J 0.46 in⁴ 191,000.00 mm⁴
Cw 726.16 in⁶ 195,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W310×45.

Lighter in W310

W310×39

Weight
39.0 kg/m (-13%)
Depth
310.0 mm (-1.0%)
Ix
85,100,000 mm⁴ (-14%)

Heavier in W310

W310×52

Weight
52.0 kg/m (+17%)
Depth
317.0 mm (+1.3%)
Ix
118,000,000 mm⁴ (+19%)

Closest Iₓ in W310

W310×60

Weight
60.0 kg/m (+33%)
Depth
303.0 mm (-3.2%)
Ix
128,000,000 mm⁴ (+29%)

Similar weight in W360

W360×45

Weight
45.0 kg/m (0.0%)
Depth
352.0 mm (+12%)
Ix
122,000,000 mm⁴ (+23%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Imported; readily available in Canada. · Methodology