Dimensions, weight per metre and paint area
686x254x140 UB is a universal beam weighing 140 kg/m: a 12 m length weighs 1,680.0 kg. It is 683.5 mm deep and 253.7 mm wide; the web is 12.4 mm and the flanges 19 mm thick.
Also listed as UB686X254X140.
| Depth h | 683.5 mm |
|---|---|
| Flange width b | 253.7 mm |
| Web thickness tw | 12.4 mm |
| Flange thickness tf | 19 mm |
| Weight per metre | 140 kg/m |
|---|---|
| Cross-section area | 178.3 cm² |
| Paint area per metre | 2.382 m²/m |
| Paint area per tonne | 17.1 m²/t |
| 1 m | 140 kg |
|---|---|
| 6 m | 840.0 kg |
| 12 m | 1,680.0 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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