Question: A hydraulic structure fails when a flood is larger than 4 6 0 0 cms . Annual maximum flow data ( Q in cms )

A hydraulic structure fails when a flood is larger than 4600 cms. Annual maximum flow data (Q in cms) shows that the mean of ln(Q) is 4.74 and the standard deviation of ln(Q) is 2.12. If a service period should be 10 years, compute the reliability (%). Assume that Q follows a Log-normal distribution

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