Steel Buildings in Europe

8 - 24 Worked Example 4: Compression Resistance 1 of 3 Made by CZT Date 02/2010 Calculation sheet Checked by ENM Date 02/2010 1. Compression Resistance This example presents the method used in the member resistance calculator for calculating the flexural and the torsional buckling resistance of members subject to pure compression, adopting the recommended values of EN 1993-1-1. References are to EN 1993-1-1 unless otherwise stated Section: IPE 500 Steel grade: S235 L y = 3,8 m L z = 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 between Class 3 and Class 4 is : 42 ε = 42  1,0 = 42 Then : w t c = 41,8 < 42  The web is class 3. 1.1.2. The flange f t c = 16 73,9 = 4,6 The limit between Class 1 and Class 2 is : 9 ε = 9  1,0 = 9 Then : f t c = 4,6 < 9  The flange is Class 1. Table 5.2 (Sheet 2) Therefore the section is Class 3. 1.2. Flexural buckling resistance about the major axis, N b,y,Rd L y = 3,8 m 2,5 200 500   b h t f = 16 mm Buckling about y-y axis: