Steel Beam Sizes / CISC / WT Tees / WT345×70

WT345×70 Steel Beam Dimensions and Properties

CISC Structural tees · v12.1

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

Units

Section diagram

WT345×70 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 47.00 lb/ft 70.00 kg/m
Depth, d 13.46 in 342.00 mm
Flange width, bf 10.00 in 254.00 mm
tw 0.488 in 12.400 mm
tf 0.744 in 18.900 mm
Area 13.80 in² 8,900.00 mm²
Ix 238.57 in⁴ 99,300,000 mm⁴
Iy 62.22 in⁴ 25,900,000 mm⁴
Sx 23.74 in³ 389,000.00 mm³
Sy 12.45 in³ 204,000.00 mm³
rx 4.17 in 106.00 mm
ry 2.12 in 53.90 mm
J 2.00 in⁴ 831,000.00 mm⁴
Cw 10.13 in⁶ 2,720,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT345×70.

Lighter in WT345

WT345×62.5

Weight
62.5 kg/m (-11%)
Depth
339.0 mm (-0.9%)
Ix
89,900,000 mm⁴ (-9.5%)

Heavier in WT345

WT345×76

Weight
76.0 kg/m (+8.5%)
Depth
344.0 mm (+0.6%)
Ix
107,000,000 mm⁴ (+7.8%)

Closest Iₓ in WT345

WT345×85

Weight
85.0 kg/m (+21%)
Depth
347.0 mm (+1.5%)
Ix
121,000,000 mm⁴ (+22%)

Similar weight in WT305

WT305×70

Weight
70.0 kg/m (0.0%)
Depth
309.0 mm (-9.6%)
Ix
77,800,000 mm⁴ (-22%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · Availability: Imported; readily available in Canada. · Methodology