30.15 - Use of Spectral Acceleration in Performance-Based Design (PBD)
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Practice Questions
Test your understanding with targeted questions
What does Sa stand for in the context of seismic design?
💡 Hint: Think about what the term 'spectral' refers to in engineering.
How is performance point determined?
💡 Hint: What two graphs are critically involved in PBD?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main purpose of using spectral acceleration in performance-based design?
💡 Hint: Focus on the main goal of performance-based design.
True or False: The demand spectrum and capacity curve are used to identify the maximum static load a structure can bear.
💡 Hint: Consider what kind of forces these graphs are reflecting.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A building's analytical models suggest that its capacity curve intersects with the demand spectrum at a point of 0.5g in spectral acceleration. If this is the expected performance at maximum seismic loads, what steps can an engineer take to improve performance if the actual ground motion is expected to be 0.7g?
💡 Hint: Think about how engineers improve structural resilience in anticipation of unexpected forces.
In a hypothetical scenario, a hospital design incorporates an expanded capacity for a specific performance point at Sa=0.6g. However, it's noted that the capacity wasn't fully evaluated and the demand spectrum shows Sa=0.8g due to site-specific conditions. What should the design team prioritize?
💡 Hint: What adjustments can architects and engineers make to ensure safety and compliance under such conditions?
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