Answer Happy

Problem 2) The slope in the figure below has a height of 10 ft and has an angle of inclination of 30°. The soil has an effective cohesion of c³ = 35 psf, an effective angle of friction of o² = 20°, and a specific weight of 25 pcf. See the figure below as a reference, which is to scale. 5 ft. 30° Origin: (0, 0) 5 ft. (a) Use the ordinary method of slices to find the factor of safety for a circular failure. Split the failure region into 6 sections of equal width. Your test circle should be centered at the point (10, 9) ft and have a radius of 10 ft. Note that the center of the circle is being measured relative to the origin (0,0) as shown in the figure above. (15 pts.) (b) Is this one test circle enough to determine the factor of safety of the slope? Can we be sure that the slope fails the way we assumed in part (a)? Explain your answer in two to three sentences. (5 pts.)