According to Terzaghi, the ratio of D15 of filter to D15 of base mater – McqOptions

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1.	According to Terzaghi, the ratio of D₁₅ of filter to D₁₅ of base material should be _____________
A.	> 5
B.	< 4
C.	4 to 5
D.	< 5
Answer» D. < 5

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