1) Properties of soil and concrete Osal 4m 9 = 30° Cohesion =0 Coefficient of base friction = 0.50 Soil's ultimate bearing copacity= V25 k 2m %3D 12 0.0 use Rankine's theovy Considering no evosion and future excavaton would happen in the Soil a) Detemine the location of the active force from the boase. 67 Determine the total normal force reachion of soil at the bose. c) Determine FS SIDING. d) Determine FSarturning o e) Determine PSpcoing. C-

a. A vane shear test was conducted in a saturated clay. Theheight and diameter of the rectangular vane were 4 in.and 2 in., respectively. During the test, the maximumtorque applied was 230 lb ? in. Determine the undrainedshear strength of the clay.b. The clay soil described in part (a) has a liquid limit of58 and a plastic limit of 29. What would be the correctedundrained shear strength of the clay for design purposes?Use Bjerrum’s relationship for l [Eq. (3.40a)].  Determine the overconsolidation ratiofor the clay. Use Eqs. (3.42) and (3.45). Use s9o 5 1340 lb/ft2.

8. Estimate the settlement of the center of the tank, shown in the sketch, due to consolidation of the 20-ft layer of clay. 80'diam. -Oil tank; 500 lb/sq ft 30' fine sand; 125 lb/cu ft 20'clay; qu = 1.3 tons/sq ft W = 54 % Wp = 26% W = 44% Isat = /15 lb /cu ft %3D Rock %3D %3D

Soil mechanic