+1 vote
in Geotechnical Engineering II by (93.8k points)
Find the critical height of an unsupported vertical cut in cohesive soil of C= 10KN/m^2 and γ=20KN/m^2.

(a) 5m

(b) 2m

(c) 8m

(d) 9m

I have been asked this question in a job interview.

I'm obligated to ask this question of Earth Pressure Problems topic in section Failure Envelopes & Earth Pressure of Geotechnical Engineering II

1 Answer

0 votes
by (243k points)
Right answer is (b) 2m

For explanation I would say: Given,

c= 10 KN/m^2

γ=20KN/m^2

Hc= 4c/γ  tan⁡∝

Since φ=0, tan⁡∝=1

\(H_c= 4×\frac{10}{20}×1= 2m.\)

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