35.9. Limitations of Using PGA Alone

Try these first

1. 1.

   What does PGA stand for?

   Hint

   Think about what it measures in seismic events.

2. 2.

   Name one limitation of PGA.

   Hint

   Consider how long the ground rattles.

3. 3.

   What does PGA measure?

   • Frequency of ground shaking
   • Maximum acceleration of ground movement
   • Total energy of shaking

   Hint

   Focus on the definition of PGA.

4. 4.

   True or False: PGA accounts for the duration of seismic shaking.

   • True
   • False

   Hint

   Consider the limitations discussed.

5. 5.

   Analyze a scenario where a structure with a high PGA rating experiences a long-duration earthquake. Discuss the potential implications for structural integrity and design.

   Hint

   Evaluate how different metrics can influence structural design recommendations.

6. 6.

   Propose an approach to incorporate cumulative energy in seismic assessments, using real-world examples to support your argument.

   Hint

   Consider how metrics relate to real-life earthquake cases.