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In Hilf’s equation ‘u = pa Δ / (va + hc γw – Δ)’, hc refers to __________

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in Geotechnical Engineering II by (93.8k points)
In Hilf’s equation ‘u = pa Δ / (va + hc γw – Δ)’, hc refers to __________

(a) Induced pore pressure

(b) Henry’s constant

(c) Volume of pore water

(d) Volume of air voids

This question was addressed to me in unit test.

I'd like to ask this question from The Swedish Slip Circle Method topic in division Stability of Slopes of Geotechnical Engineering II

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by (243k points)
The correct answer is (b) Henry’s constant

The best explanation: In Hilf’s equation hc refers to Henry’s constant of solubility of air in water by volume (= 0.02 at 68°F).

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