37.9.1. Definition and Importance

Try these first

1. 1.

   Define residual strength.

   Hint

   Think about what happens to soil after it has been saturated and shaken.

2. 2.

   What is liquefaction?

   Hint

   What effect does an earthquake have on saturated soil?

3. 3.

   Residual strength is typically ______ than pre-liquefaction strength.

   • Higher
   • Lower
   • Equal

   Hint

   Consider what happens to the soil during and after an earthquake.

4. 4.

   True or False: Effective stress is irrelevant after liquefaction.

   • True
   • False

   Hint

   Effective stress influences soil behavior significantly.

5. 5.

   Discuss how a low void ratio in a soil layer post-liquefaction impacts civil engineering projects in a flood-prone area.

   Hint

   Consider the relationship between drainage capabilities and stability.

6. 6.

   Apply the principles of residual strength to propose a mitigation strategy for a slope that risks liquefaction during an earthquake.

   Hint

   Think about methods that improve soil stability and drainage.