Catch basin w/ pipe outlet 1

[jimtheengineer10]

I am using a catch basin with a pipe in the bottom as an outlet for a detention pond. Basically when the stormwater gets to a certain elevation it will spill into the catch basin and discharge through a pipe in the bottom of the catch basin. Do I use an orifice/grate or a culvert or something else for my outlet device? Thank you.

 

[peter246]

hi Jim, please read

http://www.hydrocad.net/pond1.htm

for setting up pond outlet devices. looks like you have the same setup as the example, but without any side-openings.

 

[jimtheengineer10]

Thanks for the link. One other question I have is that my primary outlet is exfiltration.
[ul]
[li]Do I select secondary for the culvert routing[/li]
[/ul]
[ul]
[li]Do I select device 1 for my orifice/grate routing?[/li]
[/ul]

 

[jimtheengineer10]

I think I may have figured it out but if someone could confirm that the below information is correct I would appreciate it.

I need to select secondary for the culvert routing and device #2 for my orifice/grate routing.

 

[psmart]

In most cases you should set the exfiltration routing to Discarded, which is the default setting. This prevents you from accidentally routing the exfiltration to another node.

The culvert can be routed to primary, secondary, or tertiary, as you prefer,

For the orifice grate, route it to the culvert, whatever it's device number may be.

If you still have doubts, please read the previous article again. It explains the correct use of the device routing.

http://www.hydrocad.net/pond1.htm

Peter Smart
HydroCAD Software

http://www.hydrocad.net

 

[jimtheengineer10]

psmart,
It is actually an infiltration basin and not a detention pond. The orifice grate and culvert are only for emergency overflow situations. Stormwater is supposed to be contained in the infiltration basin where it will be allowed to infiltrate into the underlying soils. Should I still set the exfiltration routing to discarded? Thanks.

 

[psmart]

Unless you intend to route the exfiltration to another node, I suggest you use the default "Discarded" routing.

Peter Smart
HydroCAD Software

http://www.hydrocad.net