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Project
Toronto Water Integrated Network Skeletonization (TWINS)

Organization
City of Toronto

BE Awards category
Public Works

Project objectives
Develop a twin skeletonized network for their asset
management group.

Fast facts

  • Skeletonization is the process of reducing a network model
    for maximizing the efficiency, speed, and manageability of
    the water distribution model.
  • The city’s asset management group was worried about the
    increasing complexity of the model.
  • Bentley’s Haestad Methods WaterGEMS’s Skelebrator module
    provided the technology to automate the skeletonization
    process without losing the hydraulic equivalence of the model and the network connectivity.

Bentley products used

  • MicroStation
  • MicroStation GeoGraphics
  • Bentley Water
  • WaterGEMS

The City of Toronto operates and maintains an extensive water network that includes more than 3,500 miles of water mains, over 65,000 water valves, almost 42,000 hydrants, and 450,000 service connections; moreover, the water network is up to 150 years old in some areas. The Canadian climate increases the occurrences of water main breaks and potential service disruption.

For these reasons, information about the water facilities is essential to the operation and maintenance of a system of this size, age, and complexity.

The Survey & Mapping Unit of the Technical Services Division of the City of Toronto maintains an as-built mapping environment that emulates the real world network with 307,956 pipes/segments. The system architecture includes MicroStation, GeoGraphics, Bentley Water and Oracle. The Bentley Water data model has been extended to include facility attributes to populate the City’s data warehouse and work order management system.
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