Pezzimenti Trenchless continues to be at the forefront of trenchless innovation in Australia, with the pipeline construction experts recently completing a complex and challenging sewer installation project alongside Adept Civil Group.

Pezzimenti Trenchless was engaged by Adept Civil Group to install 150m of 324mm OD GRP sewer pipe as part of sewer relocation works at St Kevins College in Toorak, Melbourne.

The project saw Pezzimenti Trenchless insert the pipe into two bores measuring 85m and 65m in length, working at a significant depth of 15m.

The deep shaft, which featured a 5m diameter steel caisson constructed by Adept Civil Group, added additional complexity to the challenging ground conditions.

Pezzimenti Trenchless had encountered very hard siltstone on other projects, so was confident that its state-of-the-art equipment and expertise in a range of trenchless construction methods would enable it to deliver the most efficient and effective solution.

It used its laser-guided microtunnelling system to ensure accurate alignment of the pipe, which was necessary to complete the project on the very flat grade of one in 200.

Not only did the 15m depth make the project difficult to set up, but it also created extra safety risks. For Pezzimenti Trenchless, safety is paramount and it always ensures its crews are well-versed in the particular hazards and safety considerations that different trenchless projects bring.

A flexible approach was also key, as the works had to be sensitive to school drop-off and pick-up times. Trenchless technology pioneers since 1957, the Pezzimenti name has been synonymous with pipeline construction in Victoria for more than 60 years.

It was this unrivalled industry experience that made Pezzimenti Trenchless the first choice of sub-contractor for the project, along with its small set up footprint which was crucial for working in the college grounds.

This partner content is brought to you by Pezzimenti Trenchless. For more information, visit

Charlotte Pordage is Editor of Utility magazine, a position she has held since November 2018. She joined the team as an Associate Editor in October 2017, after sharpening her writing and editing skills across a range of print and digital publications. Charlotte graduated from Royal Holloway, University of London, in 2011 with joint honours in English and Latin. When she's not putting together Australia's only dedicated utility magazine, she can usually be found riding her horse or curled up with a good book.

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