35.13. Design Implications of High PGA

Try these first

1. 1.

   What does PGA stand for?

   Hint

   Think about its definition in relation to earthquakes.

2. 2.

   What is the role of ductility in seismic design?

   Hint

   Imagine what happens when a material bends.

3. 3.

   What does high PGA lead to in structural design?

   • Reduced forces
   • Increased base shear demand
   • No impact

   Hint

   Consider what happens when the ground shakes more violently.

4. 4.

   True or False: Ductility is important for flexible structures.

   • True
   • False

   Hint

   Think about how a rubber band behaves.

5. 5.

   Given a high PGA scenario, outline the steps an engineer would take to adapt the ductility of a hospital building to ensure safety.

   Hint

   Consider which materials flex best and how to detail connections.

6. 6.

   Reflecting on the relationship between Importance Factors and performance, analyze how ignoring these factors could affect public safety during an earthquake.

   Hint

   Think of emergency services' role right after a quake.