33. Response and Design Spectra

Try these first

1. 1.

   What is a response spectrum?

   Hint

   Think about what it indicates for structural safety.

2. 2.

   What does SDOF stand for?

   Hint

   Consider how many degrees of freedom it represents.

3. 3.

   What is the purpose of a response spectrum?

   • To show maximum energy consumption
   • To indicate peak structural response
   • To determine material strength

   Hint

   Focus on what information the graph provides.

4. 4.

   True or False: Design spectra are used to ensure compliance with seismic code.

   • True
   • False

   Hint

   Think about what design spectra represent.

5. 5.

   A building is designed using a response spectrum with a damping ratio of 5%. Calculate the expected spectral acceleration for a natural period of 1 second if PGA = 0.5g.

   Hint

   Use the formula S_a = PGA * normalization factor for damping.

6. 6.

   Given two structures with different damping ratios (2%, 5%), determine which one would likely experience greater deformations under the same seismic event. Justify your answer using concepts discussed.

   Hint

   Refer back to the relationship between damping and structural response.