7-Find the half-hour unit hydrograph using the excess rainfall hyetograph and direct runoff hydrograph given below Time (1/2 h) Excess rainfall (in) Direct runoff (cfs) 1 1.06 428 2 1.93 1923 1.81 3 4 5 6 7 8 9 10 11 5297 9131 10625 7834 3921 1846 1402 830 313

7-Find the half-hour unit hydrograph using the excess rainfall hyetograph and direct runoff hydrograph given below Time (1/2 h) Excess rainfall (in) Direct runoff (cfs) 1 1.06 428 2 1.93 1923 1.81 3 4 5 6 7 8 9 10 11 5297 9131 10625 7834 3921 1846 1402 830 313

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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Concept explainers

Probability, risk and uncertainty analysis for hydrological design

It gives a framework that is financially critical for finding the exceptional designs of hydrological systems with a reduced cost in total inclusive of the project cost and the disaster mitigation cost. But there would be hardly any assessment of a decent quality damage function. Hence, errors in demonstrating the hydrologic events, incorrect model parameters, and so on may occur. Here, we will discuss a specific hydrological design that of a detention basin for studying and understanding the risk-based procedure, uncertainties, and probability analysis by following a systematic framework.

Question

7-Find the half-hour unit hydrograph using the excess rainfall hyetograph and
direct runoff hydrograph given below
Time (1/2 h) Excess rainfall (in) Direct runoff (cfs)
1
1.06
428
2
1.93
1923
1.81
5297
9131
10625
7834
3921
1846
1402
830
313
Ans:
3
4
5
6
7
8
9
10
11
n
Un (cfs/in)
1
404
2
3
1079 2343
5
6
7
4
2506 1460 453 381
8
274
9
173

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