5.7.1. Seismic Excitation

Try these first

1. 1.

   What is the definition of seismic excitation?

   Hint

   Think about what happens to buildings during earthquakes.

2. 2.

   Which equation represents seismic excitation?

   Hint

   Remember the components of mass, damping, and stiffness.

3. 3.

   What does the term 'seismic excitation' refer to?

   • A. The design of buildings
   • B. The motion due to seismic forces
   • C. The measurement of structural integrity

   Hint

   Focus on the effects on buildings during earthquakes.

4. 4.

   True or False: Damping is important for minimizing vibrations in structures during earthquakes.

   • True
   • False

   Hint

   Reflect on the function of damping during dynamic loads.

5. 5.

   Given a building with a mass of 5000 kg, damping of 200 Ns/m, and stiffness of 40000 N/m, calculate the natural frequency of the building.

   Hint

   Use the natural frequency formula derived from the stiffness and mass.

6. 6.

   Discuss the impact of ignoring damping in a seismic design for a building located in a high seismic activity area.

   Hint

   Think about what damping does to oscillations and how that affects safety.