Civil Engineering - Water Resources Engineering - Discussion
Discussion Forum : Water Resources Engineering - Section 2 (Q.No. 27)
27.
The rate of rainfall for successive 10 minute periods of a 60 minute duration storm, are shown in the below figure. If the value of φindex is 3 cm/hour, the run off will be
Discussion:
16 comments Page 2 of 2.
Brijesh said:
6 years ago
I think 5 is Right.
(1)
Appala Naidu said:
6 years ago
Here rainfall is given in cm but actually it is in mm.
Then we can get an answer like.{(31-R) * 60}/40 = 3.
By this, we can get R = 2.9 cm ~3cm.
Then we can get an answer like.{(31-R) * 60}/40 = 3.
By this, we can get R = 2.9 cm ~3cm.
A G said:
6 years ago
$ index = p-q/t.
3/60 = 60+70-q/60.
q = 127.
so, 60+70-127 = 3.
3/60 = 60+70-q/60.
q = 127.
so, 60+70-127 = 3.
(2)
Soham Patel said:
4 years ago
I think 3 is correct but it is Av.Runoff for time period of 60 min.
(2)
Lokesh said:
3 years ago
By definition, φ index is the average rainfall above which the rainfall volume is equal to the runoff volume.
In the above graph, if the whole graph represents the total precipitation of that period, so the remaining area above the phi index line should be considered as runoff. From by graph- 19cm should be the runoff volume.
In the above graph, if the whole graph represents the total precipitation of that period, so the remaining area above the phi index line should be considered as runoff. From by graph- 19cm should be the runoff volume.
(4)
Indhu said:
3 years ago
R = (3*10/60) + (7*10/60) + (5*10/60) + (3*10/60).
R = 3cm Or 30mm.
R = 3cm Or 30mm.
(2)
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