305x305x129 UC Dimensions & Weight
305x305x129 UC is a BS EN 10365 universal column with an actual depth of 318 mm and a 308 mm flange, weighing 129 kg per metre (86.68 lb/ft) — commonly used for floor beams and roof framing.
305x305x129 UC Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (d) | 318 mm | 12.52 in |
| Flange width (b) | 308 mm | 12.126 in |
| Web thickness (tw) | 13.1 mm | 0.516 in |
| Flange thickness (tf) | 20.6 mm | 0.811 in |
| Cross-section area (A)computed from weight and steel density | 164.3 cm² | 25.47 in² |
| Mass | 129 kg/m | 86.68 lb/ft |
Standard: BS EN 10365. Values from the published section tables; dimensions not listed here are not shown rather than estimated.
What does 305x305x129 UC weigh and cost?
305x305x129 UC has a mass of 129 kg per metre. At an example material price of 2.00 per kg (in your currency) that is about 258.00 per metre. Set your quantity, length, and price to total your own run:
Material only, example pricing (same currency as the price you enter). Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.
Pricing more than one size? Build a full member list in the free calculator →
Stop counting 305x305x129 UCs by hand.
Upload your drawing set and SteelFlo puts a box on every steel label it finds — every 305x305x129 UC, on every page — ready to review and export as a bill of materials.
Related sizes
Deeper reading: UK UB & UC Sizes Chart · How to calculate steel weight