5. Introduction to resistance tables
5.1. General
The design resistances given in the tables have been calculated using exact values of the section properties calculated from the specified dimensions. The values obtained have then been rounded to 3 significant figures.
Design resistance tables are given for steel grades S275 and S355, S460 although not all ranges are available in all grades.
The following partial factors for resistance have been used throughout the publication for the calculation of the design resistances. The values are those given in the relevant UK National Annexes to Eurocode 3:
| γ M0 | = 1.0 | for the resistance of cross-sections |
| γ M1 | = 1.0 | for the resistance of members |
| γ M2 | = 1.25 | for bolts |
| γ M2 | = 1.25 | for welds |
| γ M3 | = 1.25 | for slip resistance at ULS |
| γ M3,ser | = 1.1 | for slip resistance at SLS |
5.2. Yield strength
The member resistance tables are based on the following values of yield strength fy.
| Steel Grade | Maximum Thickness less than or equal to (mm) |
Yield strength fy (N/mm2) |
|---|---|---|
| S275 | 16 | 275 |
| 40 | 265 | |
| 63 | 255 | |
| 80 | 245 | |
| S355 | 16 | 355 |
| 40 | 345 | |
| 63 | 335 | |
| 80 | 325 | |
| S460 | 16 | 460 |
| 40 | 440 | |
| 63 | 430 | |
| 80 | 410 | |
| 100 | 400 | |
| 150 | 385 |
The above values are those given in the product standards BS 10025-2:2004 for open sections, BS EN 10210-1:2006 for hot-finished hollow sections and BS EN 10219-1:2006 for cold-formed hollow sections. The use of the values in the product standards is specified in the National Annex to BE EN 1993-1-1.