Answered: For the relation between direct runoff…

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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Question

For the relation between direct runoff and time? A- It starts and end with base flow. B- It starts before base flow and ends after. C- it It starts and end with direct runoff. D- It starts before base flow and ends with it. What is the correct answer??

Expert Solution

Step 1:- Relationship between base flow and direct runoff

While plotting a discharge-Time graph , the base flow is achieved by joining with a straight line the point representing the beginning of of runoff to the point on the limb representing the end of surface runoff.

Let us consider the graph below ,

Let 'P' represent the beginning of direct run-off and let Q represent the point marking the end of direct runoff , then the base flow is represented by the straight line joining P and Q.

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