Problem #5 (10 points) Short answers: A. Why does the At-rest lateral earth coef

Question

Problem #5 (10 points) Short answers: A. Why does the At-rest lateral earth coefficient increase with overconsolidation? B. List two major differences between the Rankine Earth Pressure Theory and the Coulomb Earth Pressure Theory of a retaining wall and adhesion between the base of the wall and the soil should not both be considered for resistance against sliding. Please explain, in terms of soil mechanics, his reasoning for this. C. Your instructor has stated (contrary to the textbook) that passive pressure in front

Explanation / Answer

A.Due to overcosolidtion, deformation of soil occurs and compactness of soil is greater So, there is in increase in at rest lateral earth pressure coefficient

B. In coloub theory he considered retaning wall as frictioned and Rankine consider it as frictionless. this the main difference.

C.Provide anchor's at the retaining wall both at back face and at base of retaining wall. By the increase of the density and size of the retaining wall ,we can restrict .

B.

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