Steel Beam Sizes / UK / Universal Beams / UB 254×146×31

UB 254×146×31 Steel Beam Dimensions and Properties

UK Universal beams · v2023.11

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

Units

Section diagram

UB 254×146×31 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 20.90 lb/ft 31.10 kg/m
Depth, d 9.90 in 251.40 mm
Flange width, bf 5.75 in 146.10 mm
tw 0.236 in 6.000 mm
tf 0.339 in 8.600 mm
Area 6.15 in² 3,970.00 mm²
Ix 105.95 in⁴ 44,100,000 mm⁴
Iy 10.76 in⁴ 4,480,000 mm⁴
Sx 21.42 in³ 351,000.00 mm³
Sy 3.72 in³ 61,000.00 mm³
Zx 23.98 in³ 393,000.00 mm³
Zy 5.74 in³ 94,100.00 mm³
rx 4.17 in 106.00 mm
ry 1.32 in 33.60 mm
J 0.21 in⁴ 85,500.00 mm⁴
Cw 245.40 in⁶ 65,900,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 254×146×31.

Lighter in Universal beams

UB 203×133×30

Weight
30.0 kg/m (-3.5%)
Depth
206.8 mm (-18%)
Ix
29,000,000 mm⁴ (-34%)

Heavier in Universal beams

UB 305×102×33

Weight
32.8 kg/m (+5.5%)
Depth
312.7 mm (+24%)
Ix
65,000,000 mm⁴ (+47%)

Closest Iₓ in Universal beams

UB 305×102×25

Weight
24.8 kg/m (-20%)
Depth
305.1 mm (+21%)
Ix
44,600,000 mm⁴ (+1.1%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology