Practice Demand-capacity Ratios (33.16.2) - Response and Design Spectra

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6 sample questions

Question 1.
What does a Demand-Capacity Ratio less than one indicate?
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Consider safety under expected conditions.
Question 2.
Define Pushover Analysis.
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It tests the structure to the brink of failure.
3Question 3.
What is the Demand-Capacity Ratio?
- A measure of total mass
- Comparison of demand to capacity
- A structural analysis technique
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Focus on how DCR relates to demands and capacities.
4Question 4.
A DCR above one indicates:
- True
- False
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Consider what a safe capacity means.
Question 5.
You’re tasked to evaluate a new high-rise building planned for an earthquake-prone area. The seismic design spectrum indicates a demand that exceeds the initial capacity derived from pushover analysis. Discuss potential design changes.
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Focus on safer building practices.
Question 6.
Considering a bridge with a Demand-Capacity Ratio of 1.2. Explain the implications for safety and potential mitigation strategies.
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Think about the choices engineers have for safety.

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