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A soil has a void ratio of 0.6, specific gravity as 2.65 and degree of saturation as 50%. What will be its bulk unit weight?

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in Geotechnical Engineering I by (102k points)
A soil has a void ratio of 0.6, specific gravity as 2.65 and degree of saturation as 50%. What will be its bulk unit weight?

(a) 17 kN/m^3

(b) 18 kN/m^3

(c) 19 kN/m^3

(d) 20 kN/m^3

I had been asked this question during an online interview.

Question is taken from Functional Relationships in chapter Preliminary Definitions and Relationships of Geotechnical Engineering I

1 Answer

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Best answer
Correct choice is (b) 18 kN/m^3

For explanation: Given,

Degree of saturation S = 50% = 0.5

Bulk unit weight γ = (G+eS)γw/ (1+e)

γ = (2.65+0.6*0.5)*9.81/(1+0.6)

γ = 18 kN/m^3.

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