Vzorec 7

C_{D, B} = \frac{E}{4 \cdot (1 - ν^{2})} \cdot \frac{1}{\frac{\bar{h}}{t_{w}^{3}} c_{1} \cdot \frac{b}{t_{f}^{3}}} =

= \frac{21.000}{4 \cdot (1 - 0, 3^{2})} \cdot \frac{1}{\frac{(25 - 1, 25)}{{0, 75}^{3}} \frac{0, 5 \cdot 26}{{1, 25}^{3}}} = 91, 64 kNm / m

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