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4 cards from this section. Quick, good the night before a test.
Define the term 'Normal Distribution'.
Think about how values are distributed around a central point.
What does the term 'Safety Factor' refer to in structural design?
Consider why engineers include some margin in their calculations.
What shape is the normal distribution curve?
Imagine how values tend to cluster around a mean.
True or False: The area under the normal distribution curve equals one.
This is a fundamental property of probability distributions.
A civil engineer is designing a bridge. Given that the average load the bridge must support is 200,000 pounds, and the standard deviation of the load exceeded during storms is 20,000 pounds, calculate the reliability index required to ensure only a 5% chance of failure.
Refer to the standard Z-distribution table for the relevant Z-value.
Consider a safety factor that is reduced from 4.0 to 2.5 for a certain structural design. Analyze and discuss the potential implications this could have on structural integrity during abnormal conditions such as earthquakes.
Consider how structural failures in real disasters highlight the need for sufficient safety.
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