14.16. Practical Case Studies and Failures Due to Frequency Matching

Try these first

1. 1.

   What phenomenon occurs when external frequency matches natural frequency?

   Hint

   Think about amplifying sound.

2. 2.

   What was a notable result of the Mexico City earthquake in 1985?

   Hint

   Consider the matching frequencies.

3. 3.

   What is resonance?

   • A type of earthquake
   • When external frequency matches structural frequency
   • The height of a building

   Hint

   Think about how you push a swing.

4. 4.

   True or False: The Mexico City earthquake in 1985 resulted in only minor structural damage.

   • True
   • False

   Hint

   Remember the historical impact.

5. 5.

   Design a brief hypothetical building plan that includes measures to prevent resonance during an earthquake. Consider site frequency.

   Hint

   Focus on frequency adjustment techniques.

6. 6.

   Critique the structural design of a building in a city with soft soils, explaining how its natural frequency should be adjusted. What design features would enhance its earthquake resistance?

   Hint

   Think about how to alter physical properties to avoid resonance.