The major principal stress in an element of cohesion-less soil within the backfill of a retaining wall is

ertical if the soil is in a passive state of plastic equilibrium

ertical if the soil is in an active state of plastic equilibrium

nclined at 45° to the vertical plane

The major principal stress in an element of cohesion-less soil within

1.	The major principal stress in an element of cohesion-less soil within the backfill of a retaining wall is
A.	ertical if the soil is in an active state of plastic equilibrium
B.	ertical if the soil is in a passive state of plastic equilibrium
C.	nclined at 45° to the vertical plane
D.	one of the above
Answer» B. ertical if the soil is in a passive state of plastic equilibrium