6.4. The direct runoff hydrograph resulting from a 5cm of effective rainfall of 6hr duration is givenbelow. Determine the area of the catchment and the ordinates of the 6hr UH.Time (hr)612 18 24 30 36 42 48 54 60 6672Direct runoff 025175 32036031023016510560 30100(m³/s)Ans. Area of the catchment =773.28km²The ordinates of 6hr UH at 6hr intervals are (0,5,35,64,72,62,46,33,21,12,6,2,0)

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Answered: ydrograph resulting from a 5c= ea of…

ydrograph resulting from a 5c= ea of the catchment and the ordin 6 12 18 24 30 25 175 320 360 31 ment -773.28km² H at 6hr intervals are (0,5,35,64,

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

6.4. The direct runoff hydrograph resulting from a 5cm of effective rainfall of 6hr duration is given
below. Determine the area of the catchment and the ordinates of the 6hr UH.
Time (hr)
6
12 18 24 30 36 42 48 54 60 66
72
Direct runoff 0
25
175 320
360
310
230
165
105
60 30
10
0
(m³/s)
Ans. Area of the catchment =773.28km²
The ordinates of 6hr UH at 6hr intervals are (0,5,35,64,72,62,46,33,21,12,6,2,0)

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