38.8. Ductility Demand and Capacity in Seismic Design

Try these first

1. 1.

   Define ductility demand.

   Hint

   Focus on what structural response is needed during earthquakes.

2. 2.

   What does ductility capacity refer to?

   Hint

   Consider how much stress a structure can handle.

3. 3.

   What is ductility demand?

   • The absolute deformation needed
   • The required deformation during seismic events
   • The maximum load-bearing capacity

   Hint

   Focus on the definition of what structures must handle during an earthquake.

4. 4.

   True or False: Ductility capacity is the minimum deformation a structure can withstand.

   • True
   • False

   Hint

   Think about maximums versus minimums.

5. 5.

   Evaluate a bridge design where the ductility demand is estimated to be 12 cm. If the bridge’s ductility capacity is found to be 10 cm, discuss the implications and redesign strategies.

   Hint

   Consider material options and the function of connections.

6. 6.

   Propose a system to measure the ductility demand on a new high-rise structure built in a seismic zone. Include subject matter coverage in your answer.

   Hint

   Think about integration of technology and geographic data.