Steel Beam Sizes / UK / Universal Beams / UB 305×102×25
UB 305×102×25 Dimensions, Weight and Section Properties
UK Universal beams · v2023.11
UB 305×102×25: 305.1 mm depth, 101.6 mm flange width, 24.8 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
UB 305×102×25 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 | 16.66 lb/ft | 24.80 kg/m |
| Depth, d | 12.01 in | 305.10 mm |
| Flange width, bf | 4.00 in | 101.60 mm |
| tw | 0.228 in | 5.800 mm |
| tf | 0.276 in | 7.000 mm |
| Area | 4.90 in² | 3,160.00 mm² |
| Ix | 107.15 in⁴ | 44,600,000 mm⁴ |
| Iy | 2.96 in⁴ | 1,230,000 mm⁴ |
| Sx | 17.82 in³ | 292,000.00 mm³ |
| Sy | 1.46 in³ | 24,000.00 mm³ |
| Zx | 20.87 in³ | 342,000.00 mm³ |
| Zy | 2.37 in³ | 38,800.00 mm³ |
| rx | 4.69 in | 119.00 mm |
| ry | 0.78 in | 19.70 mm |
| J | 0.11 in⁴ | 47,700.00 mm⁴ |
| Cw | 101.29 in⁶ | 27,200,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus UB 305×102×25.
Lighter in Universal beams
UB 203×102×23
- Weight
- 23.1 kg/m (-6.9%)
- Depth
- 203.2 mm (-33%)
- Ix
- 21,000,000 mm⁴ (-53%)
Heavier in Universal beams
UB 203×133×25
- Weight
- 25.1 kg/m (+1.2%)
- Depth
- 203.2 mm (-33%)
- Ix
- 23,400,000 mm⁴ (-48%)
Another Iₓ option in Universal beams
UB 254×146×31
- Weight
- 31.1 kg/m (+25%)
- Depth
- 251.4 mm (-18%)
- Ix
- 44,100,000 mm⁴ (-1.1%)
Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology