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2.9.1. Definition
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Revision test
Mixed questions from across the chapter. Your answers get marked.
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Flashcard drill
2 cards from this lesson. Good the night before a test.
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- 1.
What does the California Bearing Ratio (CBR) test measure?
Hint
Think about how we assess soil strength.
- 2.
What is the formula for calculating CBR?
Hint
Consider the comparison aspect of the test.
- 3.
What does CBR stand for?
Hint
Focus on what the acronym represents in technical terms.
- 4.
A higher CBR value indicates stronger soil.
- True
- False
Hint
Consider what CBR measures.
- 5.
If a soil sample supports 3000 lbs and the standard crushed stone supports 20000 lbs, calculate the CBR.
Hint
What formula do you use to relate these values?
- 6.
Discuss the implications of a CBR value of 5% for a highway layer. What construction practices might be required?
Hint
What strategies can enhance subgrade strength?
Exercises
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
4 more questions available
Enrol freeQuiz
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
1 more question available
Enrol freeChallenge Problems
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting