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CGSnet Network for Wastewater

CGSnet Network for Wastewater. An Explanation of Network Topology and Feature Mapping As Applied to Wastewater Infrastructure. Basic Network Theory. We are working with a theoretical network topology. All relevant physical features reference a position on the theoretical network.

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CGSnet Network for Wastewater

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  1. CGSnet NetworkforWastewater An Explanation of Network Topology and Feature Mapping As Applied to Wastewater Infrastructure

  2. Basic Network Theory • We are working with a theoretical network topology. • All relevant physical features reference a position on the theoretical network. • Network is typically defined in terms of: • NODES – junctions for one, or more than two arc endpoints. Every Arc has a Start and End Node. • ARCS – paths along which features can exist

  3. NODESJunctions for one, or more than two arc endpoints.

  4. ARCSPaths along which features can exist.Every Arc has a Start and End Node. SANITARY ARCS STORM ARCS Intermediate Vertices reference Arcs STORM ARCS (crossovers) SANITARY network is created first STORM network is created later Crossovers are identified and mapped separately

  5. Network Features • Physical Features are mapped onto Arcs. • Location is determined by: • Distance from start of Arc to Feature • Length of Feature (for linear features) • XY Coordinates are also tracked and updated • Features can overlap (eg. pipe casings)

  6. Mapping of Features Feature Items Arcs SANITARY features are mapped first

  7. Mapping of Features SANITARY Feature Items SAN Arcs STORM Feature Items Nodes STM Arcs CROSSOVER Feature Items STORM features are mapped last CO Arcs

  8. Data Relationships MSCATALOG - Used by MicroStation to identify Tables Customized Manipulation User-Defined Attributes (eg. SAN_PIPE) Feature Definition Feature Symbology Drawing Elements Identifies basic parameters for feature type Identifies default symbology for feature type • Feature Item Record • Path on which it lies • Distance to start • Length (if any) Elements are encoded with table number and user-data row number (MSLINK) Arc Definition Node Definition Network path on which feature is located Arc Vertices Elements are encoded with a second table number and row number (MSLINK) Feature row also references User-Defined Attribute Defines the location of the pathway

  9. Main Features of Data Model • Seamless network • Guaranteed Topology (connectivity) • All features are grouped based on Arc (pathway) they lie on • Referential integrity of features with network • All primary data is stored in database, DGN files serve as editor/presentation medium. • Real-time maintenance of network within normal Drafting workflow

  10. Future Uses • Delivery of network information in ad-hoc form • Integration with Electronic Block Profile elevation data, for automatic receipt of new data and delivery of data to clients • 3D-visualization for analysis

  11. Questions?…

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