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HydroCAD® Stormwater Modeling - Since 1986

CONTECH Stormwater

HydroCAD Supports
Contech Stormwater Solutions

HydroCAD provides full support for the wide range of stormwater storage products offered by Contech Stormwater Solutions Inc., including their full line of concrete, CMP, and plastic storage offerings.

HydroCAD Chamber ViewerThis partnership allows CONTECH products to be easily used within any HydroCAD model for stormwater storage, detention, or infiltration.   Press release.

The latest HydroCAD-9 release includes all current chamber definitions, and provides an interactive chamber wizard for easy layout, pricing, and modeling of underground storage systems.

Users of HydroCAD 8.5 can download a chamber update for use with their current software.  However, a program update is recommended to take advantage of the new chamber wizard.

How storage is modeled

Stormwater storage typically appears in a HydroCAD model as part of the storage definition for a "pond".  In the simplest case, HydroCAD calculates the total available storage, including the interior of the chambers, plus the void space in any surrounding stone.  For a more complete analysis, a full stage-storage curve is calculated so that an inflow or runoff hydrograph can be routed 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.

CMP Storage & InfiltrationFlexible storage options

Each HydroCAD 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 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.

ChamberMaxxUsing CONTECH stormwater products

Setting up a pond to use CONTECH storage products 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 CONTECH storage products including concrete CON/SPAN® and CON/STORMTM chambers, ChamberMaxxTM plastic chambers, and corrugated metal pipe (CMP) storage using round or pipe-arch configurations.

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.

CON/STORM Detention & InfiltrationDetailed product information

For detailed CONTECH specifications and design information, please visit www.contechstormwater.com

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
CON/SPAN Detention & Infiltration    General support page
    HydroCAD features and capabilities
    Free evaluation program
    Pricing and ordering
 

CONTECH®, CON/SPAN®, and CON/STORM are trademarks of CONTECH Construction Products Inc.
HydroCAD® is a registered trademark of HydroCAD Software Solutions LLC
Chamber illustrations © Contech CPI

 

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