Barrel control
Barrel control
(OP)
Hi,
I am working on a pond retrofit, where the 5.5' culvert will not be replaced and is not a design variable- but the riser structure may be modified to provide water quality benefits. The reviewing agencies will be looking to see if there is barrel control prior to riser orifice flow... my output summary never says barrel control for the culvert. The rectangular and circular orifice always say they are controlling, and for some storm events say that they pass X cfs potential flow. I am not sure what I should be looking for in my pond summary to be sure I have barrel control. Will the output table actually read as "barrel control" for the culvert? I have worked through several iterations of riser configurations in order to see the results change to barrel control...but it doesn't seem to change.
Please let me know if I will actually get a 'barrel control' output when properly configured.
Thanks!
I am working on a pond retrofit, where the 5.5' culvert will not be replaced and is not a design variable- but the riser structure may be modified to provide water quality benefits. The reviewing agencies will be looking to see if there is barrel control prior to riser orifice flow... my output summary never says barrel control for the culvert. The rectangular and circular orifice always say they are controlling, and for some storm events say that they pass X cfs potential flow. I am not sure what I should be looking for in my pond summary to be sure I have barrel control. Will the output table actually read as "barrel control" for the culvert? I have worked through several iterations of riser configurations in order to see the results change to barrel control...but it doesn't seem to change.
Please let me know if I will actually get a 'barrel control' output when properly configured.
Thanks!





RE: Barrel control
As an experiment, you can increase the riser inlet capacity to the point where the culvert is controlling. Or decrease the size of the culvert. The report will then show the exact type of flow control (inlet, barrel, outlet, etc)
Peter Smart
HydroCAD Software
www.hydrocad.net
RE: Barrel control
a separate question - I need to print out a table with the elevation-discharge of the individual outlets in my riser structure. Is there a way to get this table printed? I see that there is only the option for elevation-discharge for the primary outflow right now. any info you have will be appreciated.
thanks
RE: Barrel control
Peter Smart
HydroCAD Software
www.hydrocad.net