Dimensions, weight per metre and paint area
305x102x25 UB is a universal beam weighing 24.8 kg/m: a 12 m length weighs 297.6 kg. It is 305.1 mm deep and 101.6 mm wide; the web is 5.8 mm and the flanges 7 mm thick.
Also listed as UB305X102X25.
| Depth h | 305.1 mm |
|---|---|
| Flange width b | 101.6 mm |
| Web thickness tw | 5.8 mm |
| Flange thickness tf | 7 mm |
| Weight per metre | 24.8 kg/m |
|---|---|
| Cross-section area | 31.6 cm² |
| Paint area per metre | 1.017 m²/m |
| Paint area per tonne | 41.0 m²/t |
| 1 m | 24.8 kg |
|---|---|
| 6 m | 148.8 kg |
| 12 m | 297.6 kg |
Dimensions and mass per BS 4-1, from Steel Optimizer's verified section library. Area is worked out from the mass at 7,850 kg/m³. Paint area counts the outside perimeter with square corners and ignores root radii, so it is on the safe side: typically 2–5 % above catalogue surface areas.
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