The major principal stress in an element of cohesionless soil within the backfill of a retaining wall is________________?
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
A fully saturated soil is said to be________________?
A. one phase system
B. two phase system with soil and air
C. two phase system with soil and water
D. three phase system
Water content of soil can______________?
A. never be greater than 100 %
B. take values only from 0 % to 100 %
C. be less than 0 %
D. be greater than 100 %
Constant head permeameter is used to test permeability of_______________?
A. silt
B. clay
C. coarse sand
D. fine sand
If the voids of a soil mass are full of air only, the soil is termed as_______________?
A. air entrained soil
B. partially saturated soil
C. dry soil
D. dehydrated soil
Voids ratio of a soil mass can_________________?
A. never be greater than unity
B. be zero
C. take any value greater than zero
D. take values between 0 and 1 only