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3 cards from this section. Quick, good the night before a test.
What is the Damping Modification Factor (DMF)?
Think about how it modifies the seismic design.
How does increasing the damping ratio affect design forces?
Consider the implications on structures during seismic events.
How does the DMF affect seismic design?
Think about the relationship between damping and response.
True or False: Increasing the damping ratio leads to a higher spectral demand.
Recall how DMF values interact with damping ratios.
You are designing a multi-story building with a base isolator system. Calculate the expected reduction in design force when using 20% damping with a DMF of 0.58. What challenges might you face in real-world application?
Consider the formula for calculating design forces with the DMF.
Propose a strategy for evaluating damping effectiveness in existing structures. What methods would you use to ensure accurate assessment?
Think of both laboratory and field-testing methods.
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