A cross section of a levee is shown in Figure P16.13a on the next page.
(a) Describe how you would determine the stability of the levee. You must provide sufficient justification for the loading conditions you would consider.
(b) Use a slope stability software program such as STB2006 to analyze the stability. Vane shear test data for the medium-to-soft clay is shown in Figure P16.13b. The average water content is 40%.
(c) If the upstream slope is subjected to scouring and its gradient can change, research and describe methods you would use to protect it. The subscripts p and cs on the strength parameters in Figure P16.13a denote peak and critical state condition, respectively.
