20.5.2. Precipitation

Try these first

1. 1.

   What does precipitation refer to in the context of pavement?

   Hint

   Think about weather conditions.

2. 2.

   What is shear strength?

   Hint

   Consider how strong the soil needs to be.

3. 3.

   How does precipitation affect the groundwater table?

   • It raises it
   • It lowers it
   • No effect

   Hint

   Think about where rainwater goes.

4. 4.

   True or False: Pumping occurs due to the expulsion of moisture from the subgrade.

   • True
   • False

   Hint

   Consider what happens during heavy load conditions.

5. 5.

   Analyze a situation where a pavement fails in a snowy region. Discuss the role of water infiltrating the subgrade and the design failures that contributed to the issue.

   Hint

   Consider all environmental impacts on the pavement.

6. 6.

   Propose a design solution for a pavement in an area with a high frequency of rainfall. What specific features should be included to enhance water management?

   Hint

   Think about how nature works with water.