14.14.1. Frequency Ratio

Try these first

1. 1.

   Define the frequency ratio.

   Hint

   It's a comparison metric!

2. 2.

   What happens at a frequency ratio close to 1?

   Hint

   Think about risks during earthquakes.

3. 3.

   What does the frequency ratio illustrate?

   • A measure of stability
   • A comparison of excitation to natural frequency
   • A design feature

   Hint

   Think about dynamic forces!

4. 4.

   Does resonance occur when the frequency ratio is approximately 1?

   • True
   • False

   Hint

   It's all about alignment!

5. 5.

   A building has a natural frequency of 3 Hz, what should the forcing frequency be to avoid resonance?

   Hint

   Think about frequency ranges.

6. 6.

   Given that a high-rise building's natural frequency is observed to change due to modifications made, discuss the implications of this change if not addressed.

   Hint

   Consider real-world construction scenarios.