What does the coefficient of uniformity indicate about a soil sample?
Understand the Problem
The question is asking about the meaning and significance of the coefficient of uniformity in the context of soil samples. Specifically, it seeks to identify what aspect of soil characteristics this coefficient measures, among given options.
Answer
The coefficient of uniformity indicates the range of particle sizes in a soil sample and whether it is well-graded or poorly graded.
The coefficient of uniformity (Cu) is a dimensionless ratio indicating the range of particle sizes in a soil sample, calculated as D60/D10 from sieve analysis data. A higher Cu signifies well-graded soil with diverse particle sizes, while a lower Cu indicates poorly graded soil with similar-sized particles.
Answer for screen readers
The coefficient of uniformity (Cu) is a dimensionless ratio indicating the range of particle sizes in a soil sample, calculated as D60/D10 from sieve analysis data. A higher Cu signifies well-graded soil with diverse particle sizes, while a lower Cu indicates poorly graded soil with similar-sized particles.
More Information
A higher coefficient of uniformity indicates a wide range of particle sizes, which is characteristic of well-graded soils. Such soils are generally more stable and better for construction than poorly graded soils with uniform particle sizes.
Tips
Be careful not to confuse the coefficient of uniformity with grain size; it's a measure of the distribution. Ensure to use correct D60 and D10 values in calculations.
Sources
- What information we get from the value of Coefficient of uniformity ... - quora.com
- Uniformity Coefficient (Cu) and Coefficient of Curvature (Cc) of Soil - theconstructor.org
- If the value of uniformity coefficient of a soil sample is n - testbook.com
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