32.11.3. Performance Point and Capacity Spectrum

Try these first

1. 1.

   What is a performance point?

   Hint

   Think about how much a structure can handle versus what it needs to withstand.

2. 2.

   Describe what a capacity spectrum shows.

   Hint

   Visualize this as a graph of curve interactions.

3. 3.

   What defines the performance point in seismic design?

   • The maximum height of a structure
   • The intersection of demand and capacity curves
   • The weight of the building

   Hint

   It relates to how much demand a structure can withstand.

4. 4.

   True or False: The capacity spectrum shows how much capacity a structure can have without any external loads.

   • True
   • False

   Hint

   Think about what loads affect the capacity spectrum.

5. 5.

   A building demonstrates high elasticity but poor damping and faces a seismic event. Analyze the impact on its capacity spectrum and performance point.

   Hint

   Reflect on how elasticity and damping interact during seismic activity.

6. 6.

   Design a hypothetical structure and sketch its capacity spectrum. Indicate the performance point and discuss potential design improvements.

   Hint

   Use principles of structural engineering to conceptualize enhancements.