35.14 - Directionality and Peak Acceleration
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Practice Questions
Test your understanding with targeted questions
What is the definition of Peak Ground Acceleration (PGA)?
💡 Hint: Think of it as the extreme shaking observed when an earthquake hits.
What is forward directivity?
💡 Hint: Consider how the direction of the fault affects the shaking intensity.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does PGA stand for?
💡 Hint: Focus on what the term represents in geology.
True or False: Forward directivity can result in increased PGA.
💡 Hint: Think about how shaking differs based on the fault direction.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Consider a scenario where an earthquake has a primary rupture located 5 km from a building. If the recorded horizontal PGA is 0.6g towards the building and 0.4g perpendicular to it, calculate the combined Vector PGA.
💡 Hint: You’ll need to apply the Pythagorean theorem here to combine the horizontal components.
Discuss how neglecting forward directivity can pose risks in urban planning, especially in seismic zones.
💡 Hint: Consider what impacts may arise from assumptions made about shaking intensity.
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