Dimensions, weight per metre and paint area
406x178x74 UB is a universal beam weighing 74.2 kg/m: a 12 m length weighs 890.4 kg. It is 412.8 mm deep and 179.5 mm wide; the web is 9.5 mm and the flanges 16 mm thick.
Also listed as UB406X178X74.
| Depth h | 412.8 mm |
|---|---|
| Flange width b | 179.5 mm |
| Web thickness tw | 9.5 mm |
| Flange thickness tf | 16 mm |
| Weight per metre | 74.2 kg/m |
|---|---|
| Cross-section area | 94.5 cm² |
| Paint area per metre | 1.544 m²/m |
| Paint area per tonne | 20.9 m²/t |
| 1 m | 74.2 kg |
|---|---|
| 6 m | 445.2 kg |
| 12 m | 890.4 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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