Detention Pond design
Detention Pond design
(OP)
I have a small subdivision (less than 5 acres) and I need to design an onsite detention pond. Does anyone have any links to design guidelines for either hand calcs or an inexpensive software program? (Is SEDCAD good for detention pond design?)





RE: Detention Pond design
htt
Then, HyroCAD here will give you a 5 node sampler. Sounds like you only need 4: Pre, Post, Bypass and Basin. It is very easy to learn.
http://www.hydrocad.net/
I've never heard of SEDCAD.
Engineering is the practice of the art of science - Steve
RE: Detention Pond design
RE: Detention Pond design
RE: Detention Pond design
I am a structural engineer who has done civil/site design off an on over my 21 year career; however, I have never designed a detention pond. I know how to use the rational method to develop pre and post-development runoff flows (in cfs) to size storm pipe. But, I don't know how to "route a hydrograph" through a basin (detention pond?).
I know that a hydrograph is Flow (cfs) versus Time (hours). How do you determine what storage volume of pond is required?
RE: Detention Pond design
htt
RE: Detention Pond design
Good luck
RE: Detention Pond design
RE: Detention Pond design
good luck
RE: Detention Pond design
RE: Detention Pond design
Do follow Francesca's advice and have a colleague review your design. You'll be amazed at how silly it all is.
As for, " If you mess up your calculations, you could flood the houses and your calculations will be hauled into court by the insurance company. I'm sure you could find a subby to design that detention basin for you for $500."
I've messed up plenty of calculations in 46 years of engineering but have yet to flood a single house. This is probably because flooding, especially from 5 acre drainage basins, is not caused by messed up calculations. Also such basins are not large enough to cause anybody, not even "the Insurance Company" any great concern. Only local "regulatory agencies" appear to believe that detention basins for these areas are a siginificant factor in any realistic flooding scenario.
good luck
RE: Detention Pond design
Perhaps I was trying to use scare-tactics, but I've seen a few detention basins go to court, in just 18 months of subdivision design.
RE: Detention Pond design
RE: Detention Pond design