Question

29. Coloumb and Rankine theories for calculating simple earth pressures are based on which of the following assumptions:
(A). Soil is cohesionless
(B). Soil is isotropic
(C). Soil is homogeneous
(D). Soil is semi-infinite
Choose the correct answer from the options given below:

• A. (A) and (B) only
• B. (B) and (C) only
• C. (B), (C) and (D) only
• D. (A), (B), (C) and (D)

Hint:

Rankine's theory assumes a smooth vertical wall back, whereas Coulomb's wedge theory accounts for wall friction and inclined wall backs.
However, both share the fundamental simplifying assumptions of a homogeneous, isotropic, semi-infinite, and cohesionless backfill.

Answer 1

The Correct Option is D