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The pF value of 2 in soil mass represent ____________

(a) Soil suction of 200 cm of water

(b) Suction pressure of 100 g/cm^2

(c) Soil suction of 100 cm of water

(d) Capillarity of 100 g/cm^2

The question was asked by my school principal while I was bunking the class.

Asked question is from Capillary Tension, Capillary Potential and Soil Suction in section Soil Water Effective and Neutral Stresses of Geotechnical Engineering I

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Right option is (c) Soil suction of 100 cm of water

The explanation is: From the relationship,

pF=log10 (hc)

2 = log10 (hc)

hc = 2/log10

hc = 100 cm.

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