GEO TERMS: SLOPE STABILITY Flashcards
a plane inclined at an angle to the horizontal at which the soil is expected to stay in the absence of any lateral support is known as _____
A. natural slope line
B. repose line
C. the line
D. all the above
D. all the above
factor of safety against sliding of a slope is the ratio of _____
A. actual cohesion to that required to maintain stability of slope
B. shear strength to shear stress along the surface
C. neither A nor B
D. both A and B
D. both A and B
failure of the stability of slopes, generally occurs along _____
A. slip plane
B. a horizontal surface
C. a curved surface
D. all the surfaces
C. a curved surface
the shearing force acting along the slice of a curved surface of slippage, causes the soil to slide _____
A. down at the center
B. down at the toe
C. upward at the center
D. none of these
A. down at the center
the slip at critical angle is generally known _____
A. δ 1-line
B. rupture plane
C. slip plane
D. all the above
D. all the above
the change of moisture content of soils, changes the _____
A. value of the angle of repose
B. amount of compaction required
C. cohesive strength of soil
D. all the above
D. all the above
a soil mass is said to be in plastic equilibrium if _____
A. it is stressed to maximum
B. it is on the verge of failure
C. it is in plastic stage
D. it starts flowing
B. it is on the verge of failure
for slopes of limited extent the surface of slippage is usually along _____
A. a parabolic arc
B. an elliptical arc
C. a straight line
D. a circular arc
D. a circular arc
for a base failure of a slope, depth factor _____
A. Df = 1
B. Df < 1
C. Df > 1
D. none of these
C. Df > 1
if “C” is cohesion, “F” is factor of safety, “γ” is unit weight, “H” is the maximum height of embankment, the stability number is _____
A. F / CγH
B. C / FγH
C. H / CFγ
D. γ / CFH
B. C / FγH
if the failure of a finite slope occurs through the toe, it is known as _____
A. slope failure
B. face failure
C. base failure
D. toe failure
D. toe failure
