Wzór 16

\begin{array}{l} b_{2, eff} = ρ_{2} \cdot c_{2} = 0, 262 \cdot 2.487, 5 = 650, 7 mm \\ b_{2, edge, eff} = 0, 5 \cdot b_{2, eff} = 0, 5 \cdot 650, 7 = 325, 4 mm \\ b_{2, \sup, eff} = 0, 5 \cdot b_{2, eff} = 0, 5 \cdot 650, 7 = 325, 4 mm \end{array}

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