Steel Beam Sizes / AISC / WT Tees / WT12x42

WT12x42 Steel Beam Dimensions and Properties

AISC Structural tees · v16.0

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

Units

Section diagram

WT12x42 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 42.00 lb/ft 62.50 kg/m
Depth, d 12.10 in 307.00 mm
Flange width, bf 9.02 in 229.00 mm
tw 0.470 in 11.900 mm
tf 0.770 in 19.600 mm
Area 12.40 in² 8,000.00 mm²
Ix 166.00 in⁴ 69,100,000 mm⁴
Iy 47.20 in⁴ 19,600,000 mm⁴
Sx 18.30 in³ 300,000.00 mm³
Sy 10.50 in³ 172,000.00 mm³
Zx 32.50 in³ 533,000.00 mm³
Zy 16.30 in³ 267,000.00 mm³
rx 3.67 in 93.20 mm
ry 1.95 in 49.50 mm
J 1.84 in⁴ 766,000.00 mm⁴
Cw 6.90 in⁶ 1,850,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT12x42.

Lighter in WT12

WT12x38

Weight
38.0 lb/ft (-9.5%)
Depth
12.00 in (-0.8%)
Ix
151.0 in⁴ (-9.0%)

Heavier in WT12

WT12x47

Weight
47.0 lb/ft (+12%)
Depth
12.20 in (+0.8%)
Ix
186.0 in⁴ (+12%)

Closest Iₓ in WT12

WT12x52

Weight
52.0 lb/ft (+24%)
Depth
12.00 in (-0.8%)
Ix
189.0 in⁴ (+14%)

Similar weight in WT13

WT13.5x42

Weight
42.0 lb/ft (0.0%)
Depth
13.40 in (+11%)
Ix
216.0 in⁴ (+30%)
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Source: AISC Shapes Database v16.0 · Methodology