37.6.2. Empirical Procedures

Try these first

1. 1.

   What does FS indicate in the context of liquefaction?

   Hint

   Think about what a ratio can signify.

2. 2.

   Define Cyclic Resistance Ratio (CRR).

   Hint

   It relates to how the soil behaves under stress.

3. 3.

   What is the Factor of Safety (FS) used for?

   • To ensure soil compaction
   • To assess liquefaction potential
   • To measure soil moisture

   Hint

   Think about its role in earthquake assessments.

4. 4.

   True or False: A Factor of Safety greater than 1 indicates no risk of liquefaction.

   • True
   • False

   Hint

   What's the meaning of being above 1 in ratios?

5. 5.

   A site with a CRR of 0.35 and CSR of 0.5 is under consideration for construction. What is the FS, and what does it indicate about liquefaction risk?

   Hint

   Calculate using the ratio given!

6. 6.

   Consider a soil sample with a high water table affecting both CRR and CSR. List factors that could be mitigated to reduce the risk of liquefaction if the CSR were to increase.

   Hint

   Think about engineering solutions to improve the soil's resistance.