Beattys Road Water Main Renewal

Fraser Rise, Vic

Project Duration

March 2023 to March 2024

Client

Greater Western Water

Project Value

$ 9.7m

The rapid housing developments of Fraser Rise and the surrounding areas has outstripped the water distribution network. Greater Western Water (GWW) engaged Jaydo to upgrade the existing water main to meet current demands and make provision to future proof the network.

The scope of works included:

1km of OD560 PE pipeline
3.2km of OD660 MSCL pipeline
0.2km of OD502 MSCL pipeline
0.5km of DN375 PVC pipeline
Five provisions for future connections
Seven scour arrangements
Seven air valve arrangements
Two connections to the Melbourne Water network
Four connections to the Greater Western Water network
Pressure reducing station
Four flow meters
Six site sentinels for pipeline sensors

In addition, all new pipelines had SCADA integrated chlorine, flow, and pressure sensors installed along the length of the pipeline to allow GWW smarter management of their assets.

key challenges

The bore logs used for design vastly underestimated the rock encountered within the ground
Working within a gas easement with two high pressure gaslines, standover supervision was required
Open cut trench methods were used to install the pipeline where it was above and below the high pressure gas mains within the easement
Road networks were also outstripped by the rapid housing developments thus causing short MOA durations for traffic management and challenging road crossings when no detour routes could be provided

Key Innovations

Although this was a construct only job, Jaydo applied the best for project approach providing solutions for the design challenges encountered
Jaydo’s Electrical and Engineering Services designed and supplied site sentinels for chlorine, flow, and pressure sensors, which came with limited information from the client and designer
Jaydo developed a construction methodology to load trucks and stockpile materials within restricted MOA hours to minimise traffic impact yet to still allow works to proceed throughout the day
Jaydo provided a solution to avoid confined space entry to flowmeter/PRV pits with a redesign of the access lid
On Taylors Road, a directional drilling PE pipeline was changed to a shallower PVC pipeline open cut trench methodology due to rock encountered on site
Designed and installed a Low Frequency Induction (LFI) and Earth Potential Rise (EPR) migration strategy due to steel pipelines in parallel vicinity with high voltage overhead power lines
A connection detail was changed to incorporate GWW network connection to the Melbourne Water network to future proof supply to the network

Value for money

Jaydo undertook an accelerated programme to ensure the Taylors Rd & Beattys Rd water mains were live in time for the increased summer demand avoiding water shortages at no additional cost to the client
Fortnightly Cultural Heritage Management Plans (CHMP) inductions and inspections were booked to ensure CHMP compliance and avoid any delays
Cost savings changing from directional drilled PE pipeline to open cut PVC on Taylors Rd
Developing a construction methodology to open cut road crossings on Beattys Rd and Modena Rd saved the expense of pipe boring through rock
Arrangements made to store pipe on site to avoid steel pipe cost fluctuation and storage fees whilst the CHMP was being developed to allow works to commence