Question

According to Bennet, non-circular slip surface may arise in ___________

(a) Non homogeneous dam

(b) Embankment dams

(c) Homogeneous dam

(d) Soil deposit with a specific plane of weakness

I had been asked this question in final exam.

This intriguing question comes from Stability Analysis of Finite Slopes topic in division Stability of Slopes of Geotechnical Engineering II

Answer 1

Correct option is (c) Homogeneous dam

To explain I would say: 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.