Practice Ground Motion Selection And Scaling (30.11.2) - Spectral Acceleration

Practice: Ground Motion Selection and Scaling

Lesson 30.11.2Spectral Acceleration

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9 questions

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6 sample questions

Question 1.
What is ground motion selection?
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Think about how engineers choose examples of potential earthquakes.
Question 2.
Why is scaling necessary?
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Why can't we just use the raw data as it is?
3Question 3.
What does ground motion selection involve?
- Choosing random records
- Selecting records that reflect site seismicity
- Ignoring past data
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Think about the characteristics of the earthquake events.
4Question 4.
Scaling ground motions is necessary to match what?
- Random values
- Target response spectrum
- Historical data
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Match it to the spectrum used in seismic design.
Question 5.
A new bridge in a seismic zone requires a Sa vs. T curve for analysis. Given the average period of the bridge is about 0.8s, select historical earthquake records and scale them to match a UHS representing a 10% probability of exceedance in 50 years.
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Consider the geological conditions of the site and its corresponding seismicity.
Question 6.
Discuss the potential consequences of using inadequate ground motion data in the seismic analysis of a new hospital design.
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Reflect on the importance of safety in critical infrastructure.

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