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A bridge has an expected life of 25 years and is designed for a flood magnitude

A bridge has an expected life of 25 years and is designed for a flood magnitude of return period 100 years. What is the risk of this hydrologic design?





ANSWER= [C] 1 - (99/100)25

Explanation for Detail Understanding

given data

Design life (n) = 25 years

Return Period (T) = 100 years

Risk = 1 - (qn) = 1 - ( 1 - p )n = 1 - ( 1 - (1/T))n

Risk = 1 - ( 1 - (1/100))25

Risk = 1 - (99/100)25

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