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5 cards from this section. Quick, good the night before a test.
What does Peak Ground Acceleration (PGA) refer to?
Think about the forces exerted during an earthquake.
Why is the duration of shaking important?
Consider how long buildings are subjected to shaking.
What does Peak Ground Acceleration indicate?
Remember what PGA stands for.
True or False: The frequency content of an earthquake does not affect how buildings respond.
Think about resonance and natural frequencies.
A structural engineer is analyzing a 5-story building with a natural frequency of 1.5 Hz. If an earthquake occurs with high energy in the frequency range of 1.5-3 Hz, what mitigation strategies would you recommend?
Think about how to reduce amplification effects.
Explain how a longer duration of shaking would affect a high-rise building designed to withstand short bursts of earthquake motion.
Consider how fatigue plays a role in material failure under continuous stress.
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