21.4. Problems

Try these first

1. 1.

   What is the California Bearing Ratio (CBR)?

   Hint

   Think about what the CBR assesses regarding soil.

2. 2.

   What are two key properties of good pavement subgrade?

   Hint

   Consider what conditions are critical for soil.

3. 3.

   What does CBR stand for?

   • California Bearing Ratio
   • Central Bearing Ratio
   • Core Bearing Resistance

   Hint

   It relates to how well soil can support loads.

4. 4.

   True or False: The cement content in subgrade soils helps prevent traffic-induced wear.

   • True
   • False

   Hint

   Focus on what governs wear and load response.

5. 5.

   A highway project involves using clay soil in a region with high rainfall. What strategies would you adopt to ensure the pavement's longevity?

   Hint

   Think about drainage and soil treatment methods.

6. 6.

   Evaluate the potential risks of using poorly classified soil in a pavement design. What steps would you take to mitigate these risks?

   Hint

   Recall the importance of soil classification in structural integrity.