37.1.6. Saturation

Try these first

1. 1.

   What is full saturation in soil?

   Hint

   Think about how water fills empty spaces in soil.

2. 2.

   Why does partial saturation reduce liquefaction risk?

   Hint

   Consider how water flows out of a sponge.

3. 3.

   What degree of saturation is considered full saturation?

   • 50%
   • 75%
   • 100%

   Hint

   Think about how it would look when a sponge is full of water.

4. 4.

   True or False: Partial saturation increases the risk of liquefaction.

   • True
   • False

   Hint

   Consider what happens when you water a plant with poor drainage.

5. 5.

   Consider a construction site located on sandy soil that has been predicted for seismic activity. What mitigation strategies could you recommend to prevent liquefaction?

   Hint

   Think about how drainage pipes might help manage water.

6. 6.

   Examine a case where liquefaction damage was reported. What were the soil conditions leading to full saturation and subsequent liquefaction?

   Hint

   Look at the relationship between ground water levels and earthquake damage.