Design moments

M where

M02 where M

- max[h/30; 20] - max[300/30; 20] - 20 mm M02 - 38.5 + 1620 x 3.187 / 400 > 0.02 x 1620

- 0.6 x 51.4 + 0.4 x (- 38.5 + 12.9) > 0.4 x 51.4

M2 - 0 (column is not slender)

Effective lengths are covered in Eurocode 2 Section 5.8.3.2 and Exp (5.15). The effective length of most columns will be l/2< l0 < l < Figure 5.7f)>. PD 6686[ref to] Cl 2.10 suggests that using the procedure outlined in Eurocode 2 and <5.8.3.2(3) 5.8.3.2(5)> leads to similar effective lengths to those tabulated in BS 8110[ref to] and reproduced in Table 5.1 of Concise EC2. For simplicity tabular values are used in this example. However, experience suggests that these tabulated values are conservative.

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