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in Geotechnical Engineering I by (102k points)
The soil suction is maximum, when angle of contact(α) is _____________

(a) α=0

(b) α=90

(c) α=60

(d) α=1

This question was addressed to me in final exam.

The origin of the question is Capillary Tension, Capillary Potential and Soil Suction topic in portion Soil Water Effective and Neutral Stresses of Geotechnical Engineering I

1 Answer

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by (727k points)
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Best answer
The correct choice is (a) α=0

Easy explanation: As soil suction depend on capillary height (hC)

Using the formula hc=4Tscos α/γw d

When α=0

hc = 4Ts/γw d, which is maximum.

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