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Multiple Choice

Which symbol indicates clayey-gravels in soil classification?

The symbol that indicates clayey gravels in soil classification is GC. This designation is part of the Unified Soil Classification System (USCS), which is used to categorize soil based on its particle sizes and plasticity characteristics. In this system, "G" stands for gravel, and when combined with "C," which denotes clay, it indicates the presence of a mixture of gravel with a significant amount of clay content. Therefore, GC is specifically used to classify soils that are primarily gravel with clay inclusions, giving engineers and geotechnical professionals critical information on the properties and behavior of the soil for construction and design purposes. The other options represent different soil classifications: GM indicates silty gravels, SC indicates clayey sands, and SM denotes silty sands, which do not correspond to clayey gravels. Each classification serves its own purpose based on the soil’s characteristics, but in this particular context, GC is the only symbol that categorically represents clayey gravels.

The symbol that indicates clayey gravels in soil classification is GC. This designation is part of the Unified Soil Classification System (USCS), which is used to categorize soil based on its particle sizes and plasticity characteristics.

In this system, "G" stands for gravel, and when combined with "C," which denotes clay, it indicates the presence of a mixture of gravel with a significant amount of clay content. Therefore, GC is specifically used to classify soils that are primarily gravel with clay inclusions, giving engineers and geotechnical professionals critical information on the properties and behavior of the soil for construction and design purposes.

The other options represent different soil classifications: GM indicates silty gravels, SC indicates clayey sands, and SM denotes silty sands, which do not correspond to clayey gravels. Each classification serves its own purpose based on the soil’s characteristics, but in this particular context, GC is the only symbol that categorically represents clayey gravels.