254x146x43 UB UB — UK Universal Beam Section Properties
254x146x43 UB is a UK UB (Universal Beam) per BS 4-1 and EN 10365 hot-rolled structural steel section. British Steel Advance sections — light UB for purlins and secondary beams.
Dimensions (Metric)
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 260 | mm |
| Flange Width (bf) | 147 | mm |
| Flange Thickness (tf) | 12.7 | mm |
| Web Thickness (tw) | 7.2 | mm |
| Cross-Sectional Area (A) | 55.1 | cmÃÂò |
| Mass | 43.0 | kg/m |
Elastic Section Properties (Metric)
| Property | Strong Axis (Y-Y) | Weak Axis (Z-Z) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 6,530 | 680 | cmâÃÂô |
| Elastic Section Modulus (S) | 503 | 161 | cmÃÂó |
| Plastic Section Modulus (Z) | 566 | 248 | cmÃÂó |
| Radius of Gyration (i) | 3.47 | 3.47 | cm |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 16 | cmâÃÂô |
| Warping Constant (Cw) | 83,000 | cmâÃÂö |
Design Resources
- UK Steel Design Guide (EN 1993) — Eurocode 3 + UK National Annex
- UK Section Properties Guide — UB, UC, PFC overview
- Beam Capacity Calculator — Check 254x146x43 UB for your loads
- Column Capacity Calculator — Check 254x146x43 UB as a column
- Section Properties Database — Compare with other sections
Frequently Asked Questions
What is the 254x146x43 UB section depth? The 254x146x43 UB has a nominal depth of 259.6mm and a flange width of 147mm. The UB series is produced to BS 4-1 and EN 10365 by British Steel (Scunthorpe) and Tata Steel.
What steel grade is standard for 254x146x43 UB? Typically S355J2 per EN 10025-2. Also available as S275JR. Verify grade requirements per EN 1993-1-1 and the UK National Annex.
What is the mass of a 254x146x43 UB beam? 43.0 kg/m. A 12m length weighs approximately 516 kg.
What is the section modulus of 254x146x43 UB? S_y = 503 cmÃÂó (strong axis) and S_z = 161 cmÃÂó (weak axis). The plastic section modulus Z_y = 566 cmÃÂó.
Related Pages
- UK Steel Design Guide (EN 1993)
- UK UB & UC Section Properties
- EN 1993 Column Buckling
- Beam Capacity Calculator
- Column Capacity Calculator
Educational reference only. Verify all section properties against the current British Steel / Tata Steel section catalogue and BS 4-1 before design. Results are PRELIMINARY — NOT FOR CONSTRUCTION.