Question: According to the Unified Soil Classification System ( USCS ) , what defines coarse - grained soils? More than 1 2 % fines are present

According to the Unified Soil Classification System (USCS), what defines coarse-grained
soils?
More than 12% fines are present in the soil
Less than 12% fines are present in the soil
Less than 50% of the soil pass the No.200 sieve
More than 50% of the grains pass the No.200 sieve
According to the Unified Soil Classification

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