305x165x54 UB UB — UK Universal Beam Section Properties
305x165x54 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 floor joists.
Dimensions (Metric)
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 311 | mm |
| Flange Width (bf) | 167 | mm |
| Flange Thickness (tf) | 13.7 | mm |
| Web Thickness (tw) | 7.9 | mm |
| Cross-Sectional Area (A) | 68.8 | cmÃÂò |
| Mass | 54.0 | kg/m |
Elastic Section Properties (Metric)
| Property | Strong Axis (Y-Y) | Weak Axis (Z-Z) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 11,700 | 1,065 | cmâÃÂô |
| Elastic Section Modulus (S) | 753 | 219 | cmÃÂó |
| Plastic Section Modulus (Z) | 812 | 336 | cmÃÂó |
| Radius of Gyration (i) | 3.85 | 3.85 | cm |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 24 | cmâÃÂô |
| Warping Constant (Cw) | 188,000 | 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 305x165x54 UB for your loads
- Column Capacity Calculator — Check 305x165x54 UB as a column
- Section Properties Database — Compare with other sections
Frequently Asked Questions
What is the 305x165x54 UB section depth? The 305x165x54 UB has a nominal depth of 310.6mm and a flange width of 167mm. 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 305x165x54 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 305x165x54 UB beam? 54.0 kg/m. A 12m length weighs approximately 648 kg.
What is the section modulus of 305x165x54 UB? S_y = 753 cmÃÂó (strong axis) and S_z = 219 cmÃÂó (weak axis). The plastic section modulus Z_y = 812 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.