37.9.3. Measurement

Try these first

1. 1.

   What is residual strength?

   Hint

   Think about what happens to soil after a liquefaction event.

2. 2.

   Name one laboratory method to measure residual strength.

   Hint

   It has 'shear' in its name and involves rings.

3. 3.

   What does residual strength measure?

   • Total shear strength
   • Shear strength after liquefaction
   • Initial shear strength

   Hint

   Focus on the state of the soil after an event.

4. 4.

   True or False: The ring shear test simulates field conditions perfectly.

   • True
   • False

   Hint

   Consider the differences between lab and real-world settings.

5. 5.

   Consider a case where a soil layer undergoes liquefaction during an earthquake and then is measured using ring shear tests. What factors would you evaluate to understand its residual strength?

   Hint

   Think about the properties of the soil and how they change after liquefaction.

6. 6.

   In a real-world scenario, how would back-analysis of a liquefied slope assist in designing more resilient structures? What key aspects would you focus on?

   Hint

   Reflect on learning from past mistakes and how to prevent them in the future.