Steel Buildings in Europe

8 - 16 Worked Example 1: Bending moment resistance 1 of 2 Made by CZT Date 02/2010 Calculation sheet Checked by ENM Date 02/2010 1. Bending moment resistance This example presents the method used in the member resistance calculator for calculating the bending moment resistance, adopting the recommended values of EN 1993-1-1. References are to EN 1993-1-1 unless otherwise stated Section: IPE 500 Steel grade: S355 L = 3,8 m 1.1. Cross-section classification 1.1.1. The web w t c = 10, 2 426 = 41,8 Table 5.2 (Sheet 1) The limit for Class 1 is : 72 ε = 72  0,81 = 58,3 Then : w t c = 41,8 < 58,3  The web is class 1. 1.1.2. The flange f t c = 16 73,9 = 4,6 The limit for Class 1 is : 9 ε = 9  0,81 = 7,3 Then : f t c = 4,6 < 8,3  The flange is Class 1 Table 5.2 (Sheet 2) Therefore the section is Class 1. The verification of the member will be based on the plastic resistance of the cross-section. 1.2. Lateral-torsional buckling resistance, M b,Rd 444 kNm 3800 0 444 0     1, 77 1  C Appendix C of Single-Storey Steel Building, Part 4