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Soil Mechanics and Foundation Engineering

Q1: Pick up the correct statement from the following:

A The phenomenon of quicksand generally occurs in the cohesionless soil

B At critical hydraulic gradient, the saturated sand becomes quick

C The critical gradient depends on the void ratio and the specific gravity

D The quick sand occurs more in fine sand and silt than coarse material

E All the above.

ANS:E - All the above.

Quick sand is a phenomenon occurring in cohesionless soil. Cohesionless soil loses shear strength due to upward water flow.

Effective stress=0.
I=Icr =Ysub/Yw =G-1/1+e.



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