Effortless sanitary sewer design and analysis

Save time, eliminate risk, and improve project performance that enable digital collaboration, automate workflows, and manage information exchanges within your connected data environment


OpenFlows SewerCAD is an easy-to-use sanitary sewer modeling and design application to design, analyze, and plan your wastewater collection systems. You can model both pressurized force mains and gravity hydraulics with ease using steady-state analysis with various standard peaking factors, as well as extended period simulations.

Intuitive sanitary sewer modeling and design software

SewerCAD is an easy-to-use sanitary sewer modeling and design software that thousands of municipalities, utilities, and engineering firms around the world trust to design, analyze, and plan wastewater collection systems. With SewerCAD, you can model both pressurized force mains and gravity hydraulics with ease, using steady-state analysis with various standard peaking factors, and extended-period simulations.

Interoperability for engineering precision models

Out of the box, you can employ this product as a stand-alone application or work directly from within MicroStation. SewerCAD maintains a single set of modeling files for true interoperability across platforms.

The stand-alone interface offers easy-to-use model layout tools, multiple background support including Bing aerial imagery, conversion utilities from CAD, GIS, and databases, and the use of terrain models to dynamically update node ground elevations, display surface contours and profiles, and design conduit inverts using real topography. SewerCAD can open OpenFlows SewerGEMS models seamlessly, including those created within ArcGIS

• Dynamic elevation updates from terrain models
• Stand-alone Windows interface
• Ability to run within:
o MicroStation (license required)
o OpenRoads Designer| OpenSite Designer| and OpenRail Designer (licenses required)
• Unlimited undo and redo
• Element morphing| splitting| and reconnection
• Automatic element labeling
• Scaled| schematic| and hybrid environments
• Element prototypes
• Aerial view and dynamic zooming
• Named view library
• Multiple background-layer support
• Image| CAD| and GIS background support
• Inferencing tool (to interpolate missing elevation data)
• Automatic calculation of elevations on pipe split operation
• Automatic input and result fields filtering (based on solver used)
• Ability to track model changes| date| element| and more
• Ability to add online Bing Maps as background

Hydraulics and Operations
• Steady-state simulations
• Energy Cost analysis
• Extended period simulations
• Flow profile methods: capacity and backwater analysis
• Automatic constraint-based design
• Diversion simulation
• Rule-based or logical controls
• Tractive stress calculations
• Accurate variable-speed pumping
• Pump batteries element
• System head curves
• Totalizing flow meters
• Air valves for high points in force mains
• Control structures (culvert inlet| weirs| orifices| depth-flow curve)
• HEC-22 node head loss calculations
• Complex manifolded pump stations/force mains
• Pond outlet structure calculations
• Support for catchment elements
• Support for culvert headwalls and endwalls
• Low impact development control analysis

Interoperability and Model Building
• Single set of model files for three compatible interfaces
• Import of MX Drainage files
• LandXML data import and export
• Polyline-to-pipe conversion from DXF and DWG files
• Spreadsheet| database| Shapefile| and OLE DB connections
• Elevation extraction from contours| points| and Shapefiles
• Interpolating elevations between elements
• Automatic elevation updates using terrain models
• Interpolating elevations at split
• GIS-ID property (to maintain associations between records in source file and elements in model)
• Seed files (new models template)
• Oracle Locator/spatial data connection
• Automated assignment of elevation data to manhole elements

• Unified file format with StormCAD| CivilStorm| and SewerGEMS • Import/export of OpenRoads Designer storm and sanitary files

Sanitary Load Allocation and Estimation
• Automatic sanitary load allocation from geospatial data
• Geospatial load allocation from billing meters
• Load allocation using flow monitoring distribution
• Land-use based load distribution
• Sewer load assignment based on phased land-use projections and population projections
• Dry-weather load assignment using hydrographs| unit loads| and pattern-based loads
• Customizable area-| count-| discharge-| and population based unit sanitary loading library
• Pipe length| diameter| surface area| length-diameter| or user defined infiltration load type

Model Management
• Unlimited scenarios and alternatives
• Comprehensive scenario management
• Scenario comparison
• Diversions displayed as links
• Active topology (to activate or deactivate network elements)
• Tabular reports with global editing
• Tabular report sorting and persistent filtering
• Table opening on selection
• Customizable engineering libraries for extreme flow factors| section size| material properties| minor losses| and unit sanitary (dry-weather) loads
• Dynamic (query-based) and static selection sets
• Element selection by polygon
• Element selection inversion
• Statistical analysis from tabular reports
• Global engineering-units management
• Drawing review tools for consistent connectivity
• Automatic topology review
• Network navigator with dozens of useful predefined queries
• Orphaned node and dead-end pipe queries
• Hyperlink for network elements
• Custom data fields (with user-assigned or formula-based values)
• Surface water flow direction displayed across any terrain
• ProjectWise and ProjectWise Geospatial Management support

Results Presentation
• Thematic mapping
• Dynamic| multi-parameter| and multi-scenario graphing
• Advanced dynamic profiling
• Advanced tabular reporting with FlexTables
• Property-based color coding and symbology
• Property-based annotation
• Project inventory report
• Scenario summary report
• Element report and graphs
• Hydrograph graphs
• Contouring with export to Shapefile| DXF| and native CAD format

Stormwater Load Allocation and Estimation
• Runoff methods: SCS Unit Hydrograph| Modified Rational Method| EPA SWMM| RTK Unit Hydrograph| generic Unit Hydrograph| Time-Area Method| ILSAX and user-defined hydrograph
• Time of concentration methods: User-defined| Carter| Eagleson| Espey/ Winslow| Federal Aviation Agency| Kerby/Hathaway| Kirpich (PA and TN)| Length and Velocity| SCS Lag| TR-55 Sheet Flow| TR-55 Shallow Concentrated Flow| TR-55 Channel Flow| Friend| Kinematic Wave| Bransby-Williams| and UK standard
• Loss Methods: Constant loss rate| Green and Ampt| Horton| Initial Loss and Constant Fraction| Initial Loss and Constant Loss Rate| SCS Curve Number