Dimensions, weight per metre and paint area
W12x252 is a wide-flange shape weighing 375 kg/m (252.0 lb/ft): a 12 m length weighs 4,500.0 kg. It is 391.2 mm deep and 330.2 mm wide; the web is 35.56 mm and the flanges 57.15 mm thick.
Also listed as W310X375.
| Depth h | 391.2 mm |
|---|---|
| Flange width b | 330.2 mm |
| Web thickness tw | 35.56 mm |
| Flange thickness tf | 57.15 mm |
| Weight per metre | 375 kg/m |
|---|---|
| Weight per foot | 252.0 lb/ft |
| Cross-section area | 477.7 cm² |
| Paint area per metre | 2.104 m²/m |
| Paint area per tonne | 5.7 m²/t |
| 1 m | 375 kg |
|---|---|
| 6 m | 2,250.0 kg |
| 12 m | 4,500.0 kg |
Dimensions and mass per AISC Shapes Database v16.0, 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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