HydroCAD® Stormwater Modeling - Since 1986
(gpm @ head)
|Effective Diameter||Trickle Diameter|
|7.5 @ 120"||0.449"||0.263"|
|7.5 @ 18"||0.721"||0.263"|
|5.0 @ 12"||0.651"||0.263"|
|11.25 @ 27"||0.798"||0.263"|
|10.0 @ 12"||0.921||0.263"|
|15.0 @ 18"||1.020"||0.263"|
|22.5 @ 27"||1.128"||0.263"|
|All diameters are based on the default orifice coefficient of 0.60|
The original approach to modeling the StormFilter (in HydroCAD-9.1) was to use a pump outlet with a special predefined rating curve, plus a separate orifice outlet to model the trickle flow. However, the tube/siphon option in HydroCAD-10 is much easier to setup and use, and is now the recommended solution.
If you must model the StormFilter using HydroCAD-9.1,you can use the pump outlet capability. Although the StormFilter is a passive gravity-operated device, it exhibits a switching behavior that is quite similar to the on/off switching of a stormwater pump.
Note: Support for the StormFilter is included in HydroCAD 9.1 starting with build 20. To check your version and build, see the Help|About screen in HydroCAD. If you have an earlier build, please download the latest build using your existing HydroCAD 9.1 download instructions.
First, create a "pump" outlet and select the pre-defined rating curve for the desired cartridge configuration. Next, set the number of cartridges and the operating elevations for the float valve. Finally, define a separate orifice outlet to simulate the trickle-flow that occurs when the float valve is in the closed position.
For detailed product specifications and design information, please visit the StormFilter product page.
Please see the following pages for further HydroCAD information:
The Stormwater Management StormFilter®
is a registered trademark of Contech Engineered Solutions LLC
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StormFilter illustrations © Contech Engineered Solutions LLC
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