pipe detention system kickback

[JDeWick]

I designed a 24" pipe detention system using the Chamber Wizard. It detains the design storm but I used the catch basin grate as the overflow (outlet) device for storms that exceed the design storm. A city engineer indicated that this is unusual and I should reconsider this approach. Are his concerns warranted?

 

[psmart]

It depends exactly why the city engineer is "concerned". Are there warnings messages in the HydroCAD model? Or is this a design issue? Or a regulatory question?

Peter Smart
HydroCAD Software

http://www.hydrocad.net

 

[JDeWick]

He may be new, and only familiar with more popular systems.
Maybe he thinks it won't work or needs a better overflow device. I think it will work fine as designed. There are no warnings from the software.

 

[psmart]

Design practices vary widely. Check your stormwater regs or BMPs. Since this appears to be a general design question you'll get a better response in the Storm/flood forum.

Peter Smart
HydroCAD Software

http://www.hydrocad.net

 

[JDeWick]

Peter,
Thanks for your direction. I'll reach to some colleagues.