Dimensions, weight per metre and paint area
305x127x42 UB is a universal beam weighing 41.9 kg/m: a 12 m length weighs 502.8 kg. It is 307.2 mm deep and 124.3 mm wide; the web is 8 mm and the flanges 12.1 mm thick.
Also listed as UB305X127X42.
| Depth h | 307.2 mm |
|---|---|
| Flange width b | 124.3 mm |
| Web thickness tw | 8 mm |
| Flange thickness tf | 12.1 mm |
| Weight per metre | 41.9 kg/m |
|---|---|
| Cross-section area | 53.4 cm² |
| Paint area per metre | 1.112 m²/m |
| Paint area per tonne | 26.6 m²/t |
| 1 m | 41.9 kg |
|---|---|
| 6 m | 251.4 kg |
| 12 m | 502.8 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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