Steel Beam Sizes / UK / Universal Beams / UB 305×127×48

UB 305×127×48 Dimensions, Weight and Section Properties

UK Universal beams · v2023.11

UB 305×127×48: 311 mm depth, 125.3 mm flange width, 48.1 kg/m weight. View the full dimensions and properties in imperial and metric units below.

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

Units

Section diagram

UB 305×127×48 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 32.32 lb/ft 48.10 kg/m
Depth, d 12.24 in 311.00 mm
Flange width, bf 4.93 in 125.30 mm
tw 0.354 in 9.000 mm
tf 0.551 in 14.000 mm
Area 9.49 in² 6,120.00 mm²
Ix 230.16 in⁴ 95,800,000 mm⁴
Iy 11.08 in⁴ 4,610,000 mm⁴
Sx 37.59 in³ 616,000.00 mm³
Sy 4.52 in³ 74,000.00 mm³
Zx 43.39 in³ 711,000.00 mm³
Zy 7.08 in³ 116,000.00 mm³
rx 4.92 in 125.00 mm
ry 1.08 in 27.40 mm
J 0.76 in⁴ 318,000.00 mm⁴
Cw 376.11 in⁶ 101,000,000,000 mm⁶

Alternatives

Useful nearby sections

Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus UB 305×127×48.

Lighter in Universal beams

UB 305×165×46

Weight
46.1 kg/m (-4.2%)
Depth
306.6 mm (-1.4%)
Ix
99,000,000 mm⁴ (+3.3%)

Heavier in Universal beams

UB 356×171×51

Weight
51.0 kg/m (+6.0%)
Depth
355.0 mm (+14%)
Ix
141,000,000 mm⁴ (+47%)

Another Iₓ option in Universal beams

UB 356×127×39

Weight
39.1 kg/m (-19%)
Depth
353.4 mm (+14%)
Ix
102,000,000 mm⁴ (+6.5%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology