StormCAD is a comprehensive modeling software program for the design and analysis of storm sewer systems. StormCAD provides calculations for catchment runoff, inlet capacity, and gutters and pipe network flow. StormCAD determines intercepted flow at network inlets, and routes bypass flow to selected bypass targets.

Inlets can be computed using the U.S. Federal Highway Administration (FHWA) HEC-22 methodology and users can choose from grate, curb, slot, ditch, and combination inlet types. Engineers can use a variety of methods to compute headloss, including HEC-22 Energy and AASHTO. StormCAD uses the Rational Method to calculate peak flows in the storm sewer design, or accepts direct input of known flows for inlet inflows. StormCAD allows users to specify Intensity-Duration-Frequency data using equations or tables. Modelers can then plot the IDF curves, and reuse their data for other projects in that region. Engineers can work with an unlimited number of sub-watershed areas and C coefficients for each inlet watershed. The constraint-based design features in StormCAD allow modelers to automatically design gravity piping and structures. The design is flexible enough to allow users to specify the elements to be designed, from a single pipe size to the entire system, by simply entering the appropriate design conditions: minimum/maximum velocities, covers, and slopes; pipe elevation offsets (including whether or not to allow drop structures), maximum spread and depth for inlets in sag; and minimum efficiency for inlets on grade. Storm Sewer Analysis and Design Software
-In challenging times, budgets for infrastructure projects are tight. OpenFlows StormCAD helps you be as effective as possible on storm sewer development projects. The software provides roadway and site designers, stormwater master planners, and land developers like you with advanced tools to effectively deliver high quality design with minimized capital investments.

OpenFlows StormCAD offers a complete approach to storm sewer design and analysis, from rainfall to outlet:
-Effortless storm sewer design: Automatically design gravity piping and structures. Enter your design constraints for OpenFlows StormCAD to automatically determine cost-effective pipe sizes and invert elevations while minimizing pipe cover to avoid unnecessary pipe trench excavation.
-Streamlined model building and management: Leverage and import virtually any external data format to jump-start the model. Then, manipulate the model data effectively, with the ability to use a multitude of data entry and model editing capabilities that simplify and shorten the modeling process
-Improved design productivity: With OpenFlows StormCAD’s ability to run from within MicroStation or AutoCAD, model in a platform that you may be more familiar with and take advantage of CAD environments and capabilities (e.g., superior layout, drafting capabilities). Or choose to model storm sewers in OpenFlows StormCAD’s stand-alone interface.

Capabilities

Allocate and estimate stormwater loads
-Load models with wet weather runoff flows derived from precipitation using the built-in rainfall distributions or user-defined rainfall events. Runoff flows are computed using the most appropriate runoff method for the project.​​

Analyze inlet capacities
-Calculate the proportion of stormwater runoff that will enter an inlet versus the proportion that will be carried downstream in a gutter or pond on the road surface. Quickly confirm that the spread of flow in a gutter doesn't exceed design requirements.​

Build and manage hydraulic models
-Jumpstart the model-building process and manage your model effectively so that you can focus on making the best engineering decisions. Leverage and import many well known external data formats, which maximizes ROI on geospatial and engineering data and automates input data generation.

Design and analyze culverts
-Select from a library of standard culvert shapes, materials, and entrance conditions, then compute culvert headwater and tailwater elevations using calculation methodologies outlined in Hydraulic Design Series Number 5 from the U.S. Federal Highway Administration.

Design stormwater systems
-Minimize capital investments by simply entering your design restrictions: velocities, slopes, cover depths, and pipe and inlet matching offsets. The software product recommends the most cost-effective pipe sizes and invert elevations, avoiding unnecessary pipe trench excavation, while meeting design restrictions.​

The application features StormCAD CONNECT Edition:
-The new user interface and easier
-StormCAD features of AutoCAD compatible software
-Take advantage of the StormCAD alone
-User reports, with the ability to customize
-Improved table for the purposes of Engineering

System Requirements:
OS:Windows 10, Windows 8, Windows 8.1, Windows 7 SP1 (32 & 64-bit for all), Server 2008/R2, Server 2012
Supported AutoCAD Versions:2018, 2019, 2020