1.7. Relevance of Soil Classification to Pavement Layers

Try these first

1. 1.

   What is the primary function of the subgrade layer?

   Hint

   Think about what the pavement relies on for stability.

2. 2.

   Name one type of soil preferred for base course layers.

   Hint

   Consider drainage and load-bearing characteristics.

3. 3.

   What is the importance of subgrade in pavement design?

   • It carries the load
   • It adds aesthetic value
   • It is not important

   Hint

   Think about what the pavement rests on.

4. 4.

   True or False: Drainage properties have no effect on pavement performance.

   • True
   • False

   Hint

   Consider how water can affect structures.

5. 5.

   Analyze a pavement design that includes expansive clay. What recommendations would you provide for improving soil performance?

   Hint

   What solutions can help work against expansion?

6. 6.

   Given a scenario of a pavement failing due to drainage issues, suggest a soil classification strategy to mitigate future problems.

   Hint

   Focus on the properties of the soil that help drain water.