34.12.1. What is SSI?

Try these first

1. 1.

   What does SSI stand for?

   Hint

   Think about the interaction during seismic events.

2. 2.

   What is the natural period of a structure?

   Hint

   It's related to how buildings oscillate.

3. 3.

   What is the main effect of SSI on structures during an earthquake?

   • Reduces base shear
   • Increases natural period
   • Both A and B

   Hint

   Think about how the structure and soil interact.

4. 4.

   The natural period of a structure is influenced by what factor?

   • True
   • False

   Hint

   Is the interaction important for oscillations?

5. 5.

   Given a building on soft soil, describe the potential changes in its natural period and the base shear experienced during an earthquake.

   Hint

   Think about the relationship between flexibility and movement.

6. 6.

   Analyze the difference in seismic design strategy for a building on hard soil versus one on soft soil.

   Hint

   What does the type of soil tell you about the building's behavior?