HydroCAD Supports CULTEC, Inc. Chambers
HydroCAD-10 provides direct support for
the full range of plastic stormwater and septic
chambers manufactured by CULTEC, Inc, of Brookfield, Connecticut.
This partnership allows CULTEC chambers to be easily used within any HydroCAD
model for stormwater storage, detention, or infiltration.
HydroCAD includes complete
CULTEC
chamber definitions, plus an interactive chamber
wizard for easy layout, pricing, and modeling of
underground storage systems.
Users of older versions must obtain a program update
in order
to get the latest chamber definitions. If you already have HydroCAD-10, make sure you're using "build 2"
in order to get support for the latest Cultec Recharger 900HD and 150XLHD
models. Details here.
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
simply 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 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
layered 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.
Using CULTEC stormwater chambers
Setting up a pond to use CULTEC storage chambers is a simple process:
Just pick the desired model(s) from the drop-down list, and specify the number of
chambers plus their elevation. HydroCAD supports all CULTEC, Inc. chambers, including all RechargerTM, Contactor®, HVLVTM,
and Field DrainTM models.
For chambers in a stone bed, just describe the shape and dimensions of the
outer excavation, plus the stone voids, and the composite storage is
calculated automatically.
Note: When using the HydroCAD
chamber wizard, all chambers in each row are
assumed to be the same length. If the end chambers are shorter than the
rest of the row (such as the Recharger V8 system), the wizard will
overestimate the system storage and size accordingly. This can be
corrected by manually adjusting the chamber and field dimensions after
completing the wizard setup.
Why are the chamber dimensions different from the manufacturer's data?
Some chamber definition files use the effective dimensions of each
chamber. These values include the effects of the corrugated sides, and
allow exact calculation of the storage volume at any depth. The effective
dimensions may be somewhat less than the overall (outside)
dimensions quoted by the manufacturer.
When calculating the volume for multiple chambers in a row, HydroCAD uses the
lay-up length, rather than the outside chamber length. This avoids
double-counting the volume at the overlap between each successive chamber.
Detailed chamber information
For detailed chamber specifications and design information, please visit the
CULTEC, Inc. web site at www.cultec.com
CULTEC, Inc. also publishes a detailed design manual which is available upon
request.
For more information about HydroCAD
Please see the following pages for further HydroCAD information:
HydroCAD home page
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
Chamber images courtesy of CULTEC, Inc.
RechargerTM, Contactor®, HVLVTM,
and Field DrainTM are trademarks of CULTEC,
Inc.
HydroCAD® is a registered trademark of HydroCAD
Software Solutions LLC
