As per Indian Standard Soil Classification System (ISSCS), if the coefficient of uniformity of a soil sample is greater than 4 and coefficient of curvatures lies between 1 to 3, the soil is classified as ____________.

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DDA JE Civil 01 Apr 2023 Shift 3 Official Paper

Answer 1

Concept:

Soil Classification as per IS

Sand is said to be well graded if the uniformity coefficient (Cu) is greater than 6 and the coefficient of curvature (Cc) lies in between 1 to 3.
Gravel is said to be well graded if the uniformity coefficient (Cu) is greater than 4 and the coefficient of curvature (Cc) lies in between 1 to 3.

So, the given soil is GW

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