Steel Beam Sizes / AISC / WT Tees / WT3x8

WT3x8 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

WT3x8 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 8.00 lb/ft 12.00 kg/m
Depth, d 3.14 in 79.80 mm
Flange width, bf 4.03 in 102.00 mm
tw 0.260 in 6.600 mm
tf 0.405 in 10.300 mm
Area 2.37 in² 1,530.00 mm²
Ix 1.69 in⁴ 703,000.00 mm⁴
Iy 2.21 in⁴ 920,000.00 mm⁴
Sx 0.69 in³ 11,200.00 mm³
Sy 1.10 in³ 18,000.00 mm³
Zx 1.25 in³ 20,500.00 mm³
Zy 1.69 in³ 27,700.00 mm³
rx 0.84 in 21.40 mm
ry 0.97 in 24.50 mm
J 0.11 in⁴ 46,200.00 mm⁴
Cw 0.04 in⁶ 11,400,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus WT3x8.

Lighter in WT3

WT3x7.5

Weight
7.5 lb/ft (-6.3%)
Depth
3.00 in (-4.5%)
Ix
1.4 in⁴ (-17%)

Heavier in WT3

WT3x10

Weight
10.0 lb/ft (+25%)
Depth
3.10 in (-1.3%)
Ix
1.8 in⁴ (+4.1%)

Closest Iₓ in WT3

WT3x6

Weight
6.0 lb/ft (-25%)
Depth
3.02 in (-3.8%)
Ix
1.3 in⁴ (-22%)

Similar weight in WT2

WT2.5x8

Weight
8.0 lb/ft (0.0%)
Depth
2.51 in (-20%)
Ix
0.8 in⁴ (-50%)
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Source: AISC Shapes Database v16.0 · Methodology