The following results were obtained by a mechanical analysis. Classify the soil using the AASHTO classification system and give the group index. Sieve Analysis, % Finer than No. 10: 84%, than No. 40: 58%, than No. 200: 8%; soil is not plastic.
What will be an ideal response?
Use Table 17.1 to classify this soil.
Since less than 35% of the material is passing No. 200 sieve, there is no liquid
limit, and the soil is not plastic, the soil is Group A-3, and there is no associated
group index.
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