Test: Analysis of Finite Slopes - Civil Engineering (CE) MCQ

The two basic types of failure of a finite slope may occur: (i) slope failure (ii) base failure.

The types of failure surface are: i) Planar failure surface ii) circular failure surface iii) Non-circular failure surface.

For toe failure, Df = 1; for base failure, Df > 1.

The stability of a finite slope can be investigated by the following methods:
i) Culmann’s method of planar failure surface
ii) The Swedish circle method
iii) Friction circle method
iv) Bishop’s method.

Collin observed that the rupture mass slide down a sliding surface, in a definite pattern resembling that of a cycloid.

If the failure occurs along a sliding that intersects the slopes at or above its toe, the slide is known as slope failure.

The ratio of the total depth (H + D) to depth H is called the depth factor Df.

Planar failure surface may commonly occur in a soil deposit or embankment with a specific plane of weakness.

According to Bennet (1951), non-circular or composite slip surface may arise in homogeneous dam have foundation of infinite depth, rigid boundary planes of maximum and presence of stronger or weaker layer.

Failure of finite slopes occurs along a curved surface. In stability computation, the curve is represented by an arc of a circle or logarithmic scale.