35.5. Factors Affecting Peak Acceleration

Try these first

1. 1.

   What does PGA stand for?

   Hint

   Think about how ground shaking is measured.

2. 2.

   How does epicentral distance affect PGA?

   Hint

   Consider the energy loss over distance.

3. 3.

   What does PGA measure during an earthquake?

   • Rotational forces
   • Peak ground acceleration
   • Vertical displacement

   Hint

   Focus on the term 'peak' in relation to ground motion.

4. 4.

   True or False: PGA increases linearly with earthquake magnitude.

   • True
   • False

   Hint

   Think about how energy release can vary.

5. 5.

   Calculate the expected PGA for a given magnitude and distance using GMPE. Consider a magnitude 7 earthquake at a distance of 30 km.

   Hint

   Remember to review the parameters used in GMPE.

6. 6.

   Design a structural component that considers site conditions and fault type for safety. Describe the factors to consider and how they would affect your design.

   Hint

   Think of how structures behave under different conditions.