35. Concept of Peak Acceleration

Try these first

1. 1.

   What does Peak Ground Acceleration (PGA) measure?

   Hint

   Think about what happens to the ground when an earthquake occurs.

2. 2.

   Which units are commonly used to express PGA?

   Hint

   Consider the unit of gravity.

3. 3.

   What is the definition of Peak Ground Acceleration (PGA)?

   • Maximum ground acceleration
   • Average ground speed
   • Minimum ground deceleration

   Hint

   Focus on what the term 'peak' signifies.

4. 4.

   True or False: PGA takes into account the duration of ground shaking.

   • True
   • False

   Hint

   Remember what PGA measures specifically.

5. 5.

   A civil engineer is designing a new bridge in a newly categorized Zone V area with a factor of 0.36g. Explain how this will affect the design requirements compared to a Zone II area.

   Hint

   Consider the differences in expected earthquake intensity and necessary structural integrity.

6. 6.

   A recent earthquake resulted in a calculated PGA of 0.8g at a site built on soft soil. Discuss the potential implications regarding the structure's stability and design considerations.

   Hint

   Think about how different ground types react to seismic forces.