May 3, 2007

Detention Pond Design-Hydrographs

Dr. Quek,

Pl verify the below,

1) The post dev hydrographs use tc calculated and checked for few durations, how about pre hydrograph , use similar tc and to which duration?
Thank you
Rosy.T

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May 3, 2007

Dr. Quek @ 7:32 pm

You can use the same durations.

For example, if you compute the post-development hydrograph for 30, 60 and 180 min, you should compute the pre-development hydrographs for the same durations.

Regards,

Dr. Quek Keng Hong

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