Dimensions, weight per metre and paint area
305x102x33 UB is a universal beam weighing 32.8 kg/m: a 12 m length weighs 393.6 kg. It is 312.7 mm deep and 102.4 mm wide; the web is 6.6 mm and the flanges 10.8 mm thick.
Also listed as UB305X102X33.
| Depth h | 312.7 mm |
|---|---|
| Flange width b | 102.4 mm |
| Web thickness tw | 6.6 mm |
| Flange thickness tf | 10.8 mm |
| Weight per metre | 32.8 kg/m |
|---|---|
| Cross-section area | 41.8 cm² |
| Paint area per metre | 1.035 m²/m |
| Paint area per tonne | 31.6 m²/t |
| 1 m | 32.8 kg |
|---|---|
| 6 m | 196.8 kg |
| 12 m | 393.6 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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