Practice Peak Acceleration On Structures Vs Ground (35.15) - Concept of Peak Acceleration

Practice: Peak Acceleration on Structures vs Ground

Lesson 35.15Concept of Peak Acceleration

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9 questions

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6 sample questions

Question 1.
What does PGA stand for in earthquake engineering?
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Think about the maximum acceleration of the ground.
Question 2.
What can floor accelerations exceed compared to PGA during seismic activity?
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Remember the resonance effects!
3Question 3.
What is Peak Ground Acceleration (PGA)?
- The maximum ground velocity.
- The maximum ground acceleration.
- The minimum vertical acceleration.
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Focus on the term 'maximum'.
4Question 4.
True or False: Floor accelerations can be lower than PGA.
- True
- False
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Consider the effect of resonance.
Question 5.
Given a building with a height of 30 meters during an earthquake where PGA is recorded at 0.25g, estimate the potential floor acceleration at the roof level, considering resonance may increase it by 3 times.
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Use the rule of tripling for floors above ground in seismic scenarios.
Question 6.
Discuss how a building’s design might change if the PGA is higher than anticipated and how this affects planning for non-structural systems.
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Relate back to the reactions of buildings during major earthquakes.

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