A soil has a dry unit weight of 17.5 kN/m3 and a water content of 20%. What will be its bulk unit weight?
a) 18 kN/m3
b) 19 kN/m3
c) 20 kN/m3
d) 21 kN/m3
Answer: d
Explanation: Given,
Dry unit weight γd = 17.5 kN/m3
Water content W = 20% = 0.2
Bulk unit weight γ = γd(1+W)
γ = 17.5*(1+0.2)
γ=21 kN/m3.
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