4.7.5. Drainage Improvements

Try these first

1. 1.

   What is the primary purpose of drainage improvements?

   Hint

   Think about the relationship between water and soil strength.

2. 2.

   Name one technique used to improve drainage.

   Hint

   Consider methods that redirect water.

3. 3.

   What can excess moisture in subgrade soil lead to?

   • Improved strength
   • Pavement distress
   • Increased durability

   Hint

   Consider how water affects soil behavior.

4. 4.

   True or False: Effective drainage systems can extend the lifespan of pavements.

   • True
   • False

   Hint

   Think about the impact of managing water.

5. 5.

   You are tasked with designing a new road. List the steps you would take to ensure effective drainage is included in your design.

   Hint

   Think about how water flows and how to keep it away from the road.

6. 6.

   Given a case study where ineffective drainage led to pavement failure, analyze the factors involved and propose solutions for improvement.

   Hint

   Break down the issues and think about practical fixes.