(Solved): Detailed attention to solvable values, (alpha, height average, etc..) 8. A section through the down ...

8. A section through the downstream portion of an earth dam is shown in Figure 3 . For the surface indicated, determine the factor of safety against failure, taking into account pore water pressures. Soil parameters: $?=2.0\mathrm{g}/{\mathrm{cm}}^3,c^{?}=4\mathrm{kN}/{\mathrm{m}}^2,{?}^{?}=32^{?}$. Where necessary, distances may be scaled. Use (a) conventional method of slices, (b) Bishop's modified method of slices (1.18) Fig. 3