Allied & ICAR Exam Bank • ALLIED_0417 NAT • 2 Marks

Section 4: Soil and Water Conservation Engineering

Hydrology and Runoff

Subtopic: Hydrology and Runoff

Question Statement:

A culvert is designed for a 10-year flood ($T = 10\text{ yr}$, $P = 0.1$). Over a service life of $n = 2\text{ years}$, the risk of failure $R = 1 - (1 - 0.1)^2 = 1 - (0.9)^2$ is (rounded off to two decimal places):

Answer Key:

0.19

Step-by-Step Solution & Explanation

$R = 1 - 0.81 = 0.19$.
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