2299. The major principal stress in an element of cohesionless soil within the backfill of a retaining wall is________________? September 7, 2025 by Admin A. vertical if the soil is in an active state of plastic equilibrium B. vertical if the soil is in a passive state of plastic equilibrium C. inclined at 45° to the vertical plane D. none of the above ✅ The correct answer is option A.
