35.8. Peak Acceleration vs Peak Velocity and Displacement

Try these first

1. 1.

   What does PGA stand for?

   Hint

   Think about ground movement at its maximum speed.

2. 2.

   What unit is PGV measured in?

   Hint

   Consider how we measure speed.

3. 3.

   What does PGA measure?

   • Peak Ground Acceleration
   • Peak Ground Velocity
   • Peak Ground Displacement

   Hint

   Think about the motion of the ground.

4. 4.

   True or False: PGV is more relevant for flexible structures than PGA.

   • True
   • False

   Hint

   Consider what happens when structures move.

5. 5.

   A newly designed bridge is expected to experience a PGA of 0.4g. Explain the considerations engineers should take for ensuring safety against potential PGV and PGD.

   Hint

   Consider how forces affect movement differently in rigid versus flexible designs.

6. 6.

   In a proposed high-rise building, the potential PGV measured is 20 cm/s. Discuss the implications for design choices compared to a structure where PGA is the main factor.

   Hint

   Relate movement and flexibility to height and design impacts of high rises.