2021 Hydraulic Transient Analysis for Hurontario Street Watermains | Region of Peel, ON, Canada

This project is to assist with the detailed design of the watermain replacement/relocation on Hurontario Street, located in the City of Mississauga, Region of Peel (Region). The water utility relocation component of the overall LRT project comprises the design and replacement of approximately 5.8 km of watermain spanning three pressure zones from north of Lakeshore Road to just north of Elm Drive. The overall location of the proposed watermain replacement is presented via a hydraulic model layout in Figure 1, as well as a street map in Figure 2.

The proposed watermains will include connections to the existing distribution system. The 600 mm diameter watermain sections will be constructed using concrete pressure pipe (CPP) whereas the 300 mm diameter watermain sections will be constructed using polyvinyl chloride (PVC) pipe. The purpose of the analysis is to:

1. Evaluate the hydraulic transient-based risks for the watermains;

2. Provide the maximum, minimum, and recommended design pressures for the watermains; and

3. Confirm the requirements for watermain combination air valves (CAVs). 

Figure 1: Hydraulic model layout for the Region’s Zone 1 and Zone 2 water system (model plan view)

Figure 2: Location of proposed Zone 1 and Zone 2 Hurontario Street watermains

Table 1: Transient analysis scenario details

Figure 3: Scenario 1– 2021 MHD, LWL-to-LWL, global power failure, no surge protection

Location: Regional Municipality of Peel, ON, Canada

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