A cofferdam has to be built in a river to withstand four consecutive flood seasons (i.e., 4 years) and offer protection against a 20-yr flood. The annual flood series for a period of 30 years at the site indicate a maximum flood peak of 8000 cumec and a minimum of 1800 cumec. Assuming that the annual flood peaks plot as a straight line on a semi-log paper (recurrence interval plot- ted as abscissa to logarithmic scale), estimate the magnitude of the 20-yr flood (without plotting) and determine the probability of its occurrence during the life of the cofferdam. (7200 cumec, 18.6%)

A cofferdam has to be built in a river to withstand four consecutive flood seasons (i.e., 4 years) and offer protection against a 20-yr flood. The annual flood series for a period of 30 years at the site indicate a maximum flood peak of 8000 cumec and a minimum of 1800 cumec. Assuming that the annual flood peaks plot as a straight line on a semi-log paper (recurrence interval plot- ted as abscissa to logarithmic scale), estimate the magnitude of the 20-yr flood (without plotting) and determine the probability of its occurrence during the life of the cofferdam. (7200 cumec, 18.6%)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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