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Civil Engineering PE

Category - Material QC

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A soil that is classified as A-1 consists mainly of which of the following materials?

Clay
Sand and gravel
Silt
Loam

Explanation

Answer: B - Soil that is classified as A-1 consists mainly of sand and gravel. A-1, A-2, and A-3 categories of soil include granular materials. A-4, A-5 and A-6 soils contain mostly clay and silt. A-7 soils consist predominately of clay. A-8 soils are those which are composed of 15% or more of organic matter.

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