Practice Test Procedure (2.9.2) - Engineering Characteristics of Soils

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9 questions

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6 sample questions

Question 1.
What does CBR stand for?
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Think about what this test measures.
Question 2.
What is the purpose of soaking a soil sample before the CBR test?
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Recall the effect of water on soil strength.
3Question 3.
What does the CBR test measure?
- A. Shear strength of soil
- B. Load-bearing capacity of soil
- C. Soil moisture content
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Focus on what kind of capacity it evaluates.
4Question 4.
True or False: The soaking of soil samples may increase their strength.
- True
- False
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Think about how water interacts with soil.
Question 5.
Analyze a CBR test result of a sandy soil which shows a CBR of 10%. Discuss the implications for road construction.
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Consider the implications on structural needs based on traffic type.
Question 6.
Assuming a specific subgrade has a CBR value of 20%, calculate the required pavement thickness if a standard design suggests 300 mm for a CBR of 10%.
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Think about structural requirements and how they change with CBR values.

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