The ratio of D60 and D10 sieve sizes in the sieve analysis of granular material is calleda)Well coefficientb)Uniformity coefficientc)Recharge coefficientd)Curvature coefficientCorrect answer is option 'B'. Can you explain this answer?

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The ratio of D₆₀and D₁₀ sieve sizes in the sieve analysis of granular material is called

a)
Well coefficient
b)
Uniformity coefficient
c)
Recharge coefficient
d)
Curvature coefficient

Correct answer is option 'B'. Can you explain this answer?

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The ratio of D60 and D10 sieve sizes in the sieve analysis of granula...

Coefficient of Uniformity / Uniformity Coefficient

It is defined as the ratio of D₆₀and D₁₀ sieve sizes in the sieve analysis of granular material.

Higher is the value of C_u,the larger is the range of the particle size.

C_u = D₆₀/D₁₀

For uniformly graded soil, C_u = 1

For well graded sand, C_u > 6

For well graded gravel C_u > 4

Coefficient of Curvature / Curvature Coefficient:

C_c =

For well graded soil, 1 < cc="" />< />

For gap graded soil, 1 < />_c or C_c > 3

where

D₆₀= size at 60% finer by weight

D₃₀= size at 30% finer by weight

D₁₀ = size at 10% finer by weight = Effective size

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The ratio of D60 and D10 sieve sizes in the sieve analysis of granular material is calleda)Well coefficientb)Uniformity coefficientc)Recharge coefficientd)Curvature coefficientCorrect answer is option 'B'. Can you explain this answer?

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