Digitizing in TWW

This represents a guide on how to correctly collect and digitize data of sewer networks including building the topology.

• Data entry
  • The TWW wizard
  • QGIS standard tools
• Digitizing Wastewater Structures
  • General
  • Digitizing
  • Further attributes and classes
  • Geometry synchronization
• Digitizing detailed geometry
  • General
  • Digitizing tool
• Digitizing Detailed Geometry as Drainage Channel
  • General
  • Digitizing tool
• Digitizing Channels
  • General
  • Digitizing
  • Further attributes and classes
  • Geometry synchronization
• Deleting objects
  • Delete Reach
  • Delete Manhole or other Wastewater Structure
  • Delete Wastewater Structure, but keep the wastewater_node and the connections to the wastewater_node
  • Delete Cover
  • Delete Structure parts
  • Delete detailed geometries
• Digitizing Catchment Areas
  • General
  • Digitizing
  • Editing
  • Split Areas
  • Merge Areas
  • Connect Catchment area to Wastewater Network Nodes
  • The ‘duplicate coord’-error
• Importing data
  • General
  • Example Importing manholes from a TXT-File:
  • Example Importing manholes with attributes: