Formel 3

\begin{array}{l} I_{y} = 13.304 {cm}^{2} \\ z_{m} = 8, 786 cm \\ b (z) = 1 cm \\ h = 40 cm \\ d = 45 cm \\ S_{y 1} = b (z) \cdot (h - z_{m} - z) \cdot (\frac{h - z_{m} - z}{2} z) \\ S_{y 2} = b (z) \cdot d \cdot - (z_{m} - b (z)) \\ A_{sz} = \frac{I_{y}^{2}}{\int_{- 30, 124}^{8, 786} \frac{S_{y 1} (z)^{2}}{b (z)} dz \int_{9, 286}^{8, 786} \frac{S_{y 2} (z)^{2}}{b (z)} dz} = 30, 17 {cm}^{2} \end{array}

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