Steel Beam Sizes / UK / Universal Beams / UB 305×102×28

UB 305×102×28 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 305×102×28 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 18.95 lb/ft 28.20 kg/m
Depth, d 12.15 in 308.70 mm
Flange width, bf 4.01 in 101.80 mm
tw 0.236 in 6.000 mm
tf 0.346 in 8.800 mm
Area 5.56 in² 3,590.00 mm²
Ix 129.01 in⁴ 53,700,000 mm⁴
Iy 3.72 in⁴ 1,550,000 mm⁴
Sx 21.24 in³ 348,000.00 mm³
Sy 1.89 in³ 31,000.00 mm³
Zx 24.59 in³ 403,000.00 mm³
Zy 2.95 in³ 48,400.00 mm³
rx 4.80 in 122.00 mm
ry 0.82 in 20.80 mm
J 0.18 in⁴ 74,000.00 mm⁴
Cw 129.59 in⁶ 34,800,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 305×102×28.

Lighter in Universal beams

UB 254×102×25

Weight
25.2 kg/m (-11%)
Depth
257.2 mm (-17%)
Ix
34,200,000 mm⁴ (-36%)

Heavier in Universal beams

UB 254×102×28

Weight
28.3 kg/m (+0.4%)
Depth
260.4 mm (-16%)
Ix
40,000,000 mm⁴ (-26%)

Closest Iₓ in Universal beams

UB 254×146×37

Weight
37.0 kg/m (+31%)
Depth
256.0 mm (-17%)
Ix
55,400,000 mm⁴ (+3.2%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology