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Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 8 (Q.No. 50)
UPSC Civil Service Exam Questions
50.
Well-graded dense saturated sands have high shear strength because :
Such sands have a better grade (superior type) of sand grains resulting in higher strength
Such sands have lower water content, which increases shear strength
Such sands have better interlocking of grains, higher inter-particle contacts and higher inter-particle frictional resistance resulting in higher strength.
Presence of water in such sands induces capillary pressure generating higher inter-granular stresses, which generate apparent cohesion and hence higher shear strength.
Answer: Option
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