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I used my catchement area to calculate my runoff using the national method. how will i go on...

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Civil Engineering

Iused my catchement area to calculate my runoff using the nationalmethod.
how will i go on calculating the volume needed forstorage?
which equations will i use ?
i want to have a storage tank that is pumped to the wetland.how will i distribute the volume and calculate the sizing foreach.
Can you explain with an example if you can?

Answer & Explanation Solved by verified expert
3.7 Ratings (551 Votes)
While calculating runoff from the rational method due careshould be taken while calculating intensity as it is a varialequantityIt is prescribed to study minimum of 25 years rainfall dataThere are mainly two methods used first is the method ofcalculating intensity using IDF Curve intensitydurationfrequency and the second is approximatemethodAn IDF Curve gives the rainfall intensity for required frequencyand duration The intensity varies with frequency and duration    See Answer
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