HydroCAD Stormwater Modeling - Since 1986


HydroCAD Supports Shea Concrete Products

HydroCAD provides direct support for dry wells and leaching chambers produced by Shea Concrete Products.  This allows Shea products to be easily used within any HydroCAD model for stormwater storage, detention, or infiltration.  HydroCAD also includes an interactive chamber wizard, which greatly simplifies the layout, pricing, and modeling of underground storage systems.

Shea Concrete Products can be modeled with HydroCAD-10 build 24 or later.  If you have an earlier version of HydroCAD, you must obtain a program update in order to model Shea Concrete Products.

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.

Using Shea concrete chambers

Setting up a pond to use Shea concrete chambers is a simple process:  After launching the HydroCAD Chamber Wizard select the desired Shea product and set the desired system dimensions.  Shea products can also be modeled with the classic "Prefab Chamber" option, but the Chamber Wizard is preferred for automatic handling of system layout and stone backfill.

Detailed chamber information

For technical product details please visit the Shea Concrete web site.

For more information about HydroCAD

Please see the following pages for further HydroCAD information:

    Pond storage calculations
    Storage chamber modeling
    Exfiltration calculations
    General support page
    HydroCAD features and capabilities
    Free evaluation program
    Pricing and ordering

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Images courtesy of Shea Concrete Products.


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