(Formerly numbered 223.) Lecture, two hours; active learning, two hours; discussion, two hours; outside study, six hours. Requisite: course 220. Slope stability analysis, including limit equilibrium procedures, finite element method, seepage analysis, and advanced topics such as rapid drawdown, construction of embankments on soft soil, and seismic slope stability. Lateral earth retention systems including gravity walls and excavation support systems. Advanced analysis methods and design project involving real landslide problem. Emphasis on preparation of professional engineering documents such as proposals, work acknowledgements, figures, plans, and reports. Concurrently scheduled with course C123. Letter grading.