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# (Solved): 2. (18 points) A retaining wall is shown in Figure 1. Given: $$H=9 \mathrm{~m}, H_{1}=4 \mathrm{~m ... 2. (18 points) A retaining wall is shown in Figure 1. Given: \( H=9 \mathrm{~m}, H_{1}=4 \mathrm{~m}$$, $$q=20 \mathrm{kPa}, \quad \eta=17 \mathrm{kN} / \mathrm{m}^{3}, c_{1}=12 \mathrm{kPa}, \varphi_{1}=24^{\circ} ; \quad \gamma_{\mathrm{sit}}=20 \mathrm{kN} / \mathrm{m}^{3}, \quad c_{2}=0, \varphi_{2}=30^{\circ}$$, Determine the Rankine active earth pressure $$E_{\mathrm{a}}$$, and the water pressure $$E_{\mathrm{w}}$$, Draw the distribution curve of Rankine active earth pressure and pore water pressure, and calculate the total lateral pressure $$P_{\mathrm{L}}$$. Figure 1

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2) Given, H1=4m,H=9m, c1=12kPa,c2=0,?1=240,?1=17KN/m3, H2=H?H1=9?4=5m, (?2)sat=20KNm3,?2=300,q=20kPa Now,
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