Answer Happy

Which of the following statements is incorrect? O a. Coulomb's passive coefficient overestimates passive resistance because of its failure to account for the curvature of the failure surface O b. Rankine's theory assumes that the wall is vertical and smooth O c. Coefficient of earth-pressure-at-rest has to be obtained experimentally O d. Coulomb's coefficients are generally conservative vis-à-vis Rankine's coefficients