4.6. Seasonal and Environmental Considerations

Try these first

1. 1.

   What does soaked CBR indicate?

   Hint

   Think about conditions during heavy rainfall or flooding.

2. 2.

   What does the freeze-thaw cycle do to soil?

   Hint

   Consider the impact of freezing and thawing on stability.

3. 3.

   What does soaked CBR simulate?

   • Dry conditions
   • Worst-case saturated conditions
   • Standard conditions

   Hint

   Remember, it's about how soil behaves when wet.

4. 4.

   True or False: A rising water table strengthens subgrade soil.

   • True
   • False

   Hint

   Consider how saturation impacts soil strength.

5. 5.

   Given the climate history of an area with fluctuating temperatures and significant snowfall, design a pavement structure. Justify your choices based on seasonal conditions.

   Hint

   Analyze historical data for snow and temperatures to adjust your design.

6. 6.

   If water from a rising table threatens to saturate a site for new pavement, outline a mitigation strategy and describe how you'd monitor ongoing performance.

   Hint

   Focus on proactive strategies to manage changing conditions.