The relationship between γd, G, w and S is_______
a) γd = G γw*(1+(\(\frac{wG}{S}\)))
b) γd = G γw – (1+(\(\frac{wG}{S}\)))
c) γd = G γw/(1+(\(\frac{wG}{S}\)))
d) γd = G γw+(1+(\(\frac{wG}{S}\)))
Answer: c
Explanation: The dry unit weight is given by,
γd = \(\frac{Gγ_w}{(1+e)}\)
but e=\(\frac{wG}{S}\)
substituting e in γd
γd = G γw/(1+(\(\frac{wG}{S}\))).
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