1.13.1. Important Parameters of Ground Motion

Try these first

1. 1.

   What does Peak Ground Acceleration (PGA) measure?

   Hint

   Consider what action happens during an earthquake.

2. 2.

   Why is the duration of ground motion important?

   Hint

   Think about prolonged shaking effects on buildings.

3. 3.

   What is the Peak Ground Acceleration (PGA)?

   • A. The maximum speed of a building
   • B. The maximum horizontal ground acceleration
   • C. The structural design level

   Hint

   Think about what ground motion refers to.

4. 4.

   True or False: Longer durations of ground motion can lead to more potential damage in structures.

   • True
   • False

   Hint

   Consider the relation of time and structural response.

5. 5.

   Design a building in a region with high PGA values. How will you factor in spectral content to mitigate the risk of resonance?

   Hint

   Evaluate the building's frequency and compare it to expected seismic conditions.

6. 6.

   You are assessing a site with a recorded long duration of ground shaking. Discuss your structural considerations in light of this.

   Hint

   Think about what structures endure under prolonged stress.