Practice Effective Size And Uniformity Coefficient (5.3.2.1) - Soil Classification

Practice: Effective Size and Uniformity Coefficient

Lesson 5.3.2.1Soil Classification

Practise this section

10 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What does D10 represent in soil classification?
Show hintHide hint
Think about the significance of percentages in particle size.
Question 2.
What is the purpose of the uniformity coefficient (Cu)?
Show hintHide hint
Consider how grading might affect soil stability.
3Question 3.
What does effective size (D10) indicate?
- Size at which 10% of soil is finer
- Size at which 50% of soil is finer
- Size at which 100% of soil is finer
Show hintHide hint
Remember the number associated with D10.
4Question 4.
A uniform soil has a uniformity coefficient (Cu) less than 3. True or False?
- True
- False
Show hintHide hint
Consider what qualities a well-graded soil would have compared to a uniform soil.
Question 5.
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.
Show hintHide hint
Remember the formula for uniformity coefficient is Cu = D60/D10.
Question 6.
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.
Show hintHide hint
Consider how silt behaves under load and its water retention capabilities.

6 more questions in this section. Enroll free to practise them all.