5.3.2.1 - Effective Size and Uniformity Coefficient
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Practice Questions
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What does D10 represent in soil classification?
💡 Hint: Think about the significance of percentages in particle size.
What is the purpose of the uniformity coefficient (Cu)?
💡 Hint: Consider how grading might affect soil stability.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does effective size (D10) indicate?
💡 Hint: Remember the number associated with D10.
A uniform soil has a uniformity coefficient (Cu) less than 3. True or False?
💡 Hint: Consider what qualities a well-graded soil would have compared to a uniform soil.
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Challenge Problems
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Scenario: A soil sample has a D10 of 0.15 mm, D30 of 0.25 mm, and D60 of 0.45 mm. Calculate the uniformity coefficient (Cu) and classify the soil's grading.
💡 Hint: Remember the formula for uniformity coefficient is Cu = D60/D10.
Case Study: You are tasked with designing a foundation for a structure in a region with 90% silt. Predict how this uniform soil behavior might affect the construction.
💡 Hint: Consider how silt behaves under load and its water retention capabilities.
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