35.23. Supplementary Ground Motion Parameters

Try these first

1. 1.

   What does Spectral Acceleration measure?

   Hint

   Think of how buildings respond to different shaking speeds.

2. 2.

   What does Arias Intensity quantify?

   Hint

   It's related to the amount of shaking energy experienced.

3. 3.

   What does Spectral Acceleration (Sa) measure?

   • Energy content
   • Structural response by period
   • Peak ground shaking

   Hint

   Consider the period of vibration of structures.

4. 4.

   True or False: Arias Intensity is an indicator of peak ground acceleration.

   • True
   • False

   Hint

   Think about what different parameters signify.

5. 5.

   Consider a structure designed only using PGA. How might this approach lead to deficiencies in a multi-story building subjected to varied frequencies during an earthquake?

   Hint

   Think about frequency dependency and how buildings experience motion differently.

6. 6.

   Analyze how a longer Significant Duration might influence the choice of materials in a seismic zone.

   Hint

   Consider the material's performance over time under prolonged stress.