HydroCAD Supports ACF Environmental R-TankHD
HydroCAD provides direct support for
the R-Tank from ACF Environmental.
This allows R-Tank stormwater modules to be easily used within any HydroCAD model for
stormwater storage, detention, or infiltration.
The R-Tank product line has been acquired by Ferguson, and is now supported by HydroCAD under that name.
The remainder of this page is provided for the benefit of customers using the ACF R-Tank data provided in earlier versions of HydroCAD.
The R-Tank HD can be modeled with HydroCAD-10 build 8 or later. Support for the new R-Tank LD, SD, and XD models was added in HydroCAD-10 build 20, and support for the R-Tank UD was added in HydroCAD 10.1-2. If you have an earlier version of HydroCAD, you must obtain a program update in order to model the R-Tank UD.
How chambers are modeled
In a HydroCAD model, stormwater chambers typically appear as part of the
storage definition for a "pond". In the simplest case, HydroCAD
calculates the available storage for use with other calculations.
But more often, it is used to generate a complete inflow or runoff hydrograph and
route it through the pond. The resulting analysis indicates the water
levels attained throughout the rainfall event, as well as any discharge
that may occur through outlet devices or infiltration into the surrounding
ground.
Flexible storage options
Each pond may include an unlimited number of storage definitions as required to describe its overall storage characteristics. This makes it easy to model complex storage arrangements, such as a combination of multiple chambers, pipe storage, catch basins, or other contributing volumes.
But the most significant feature is the ability to embed (bury) chambers in a
bed of crushed stone, and have HydroCAD automatically calculate the combined
storage at any water surface elevation. This makes it easy to determine
the storage for virtually any configuration of storage chambers, without
resorting to any manual calculations.
HydroCAD can also model almost any imaginable storage arrangement, including chambers of different sizes combined with auxiliary storage from adjacent pipes and catch basins, and even the above-ground areas (parking lot) that may provide overflow storage for certain events.
Modeling the ACF Environmental R-Tank
Setting up a pond to use
R-Tank modules is a simple process: Just open the
chamber wizard, expand the ACF section in the
drop-down list, and select the desired R-Tank model and height. Adjust
the number of chambers until you get the desired storage.
The wizard automatically configures the recommended stone envelope around the chambers and allows for storage in the stone voids. The stone dimensions and/or voids can be adjusted as required for specific situations. For applications without stone storage, set the stone voids or dimensions to zero.
Detailed chamber information
For detailed chamber specifications and design information, please visit the ACF R-Tank web site.
For more information about HydroCAD
Please see the following pages for further HydroCAD information:
Pond storage calculations
Storage chamber modeling
(includes step-by-step instructions)
Exfiltration calculations
General support page
HydroCAD features and capabilities
Free evaluation program
Pricing and ordering
Images courtesy of ACF Environmental.
R-Tank is a trademark of ACF Environmental.
HydroCAD® is a registered trademark of HydroCAD
Software Solutions LLC.