Asset Owner: Sydney Water
This Scope of Works relates to construction works at Mirvac’s Green Square Site 15 Project. The project consisted of four (4) mid-rise apartment buildings (up to 23 levels in height) with a total of 342 quality apartments.
The Site is located in Portman St, Zetland NSW 2017.
As the project including a three (3) story basement carpark, Mirvac were required to carry out a sewer diversion of the line that was crossing the site.
Killard Infrastructure were involved in the following works:
Killard subcontracted and managed the boring works that included an OD700mm steel pipe being case bored to allow the installation of DN450 GRP sewer carrier pipes.
Due to the manholes being located beneath high voltage power cables, a DN5500 segmental steel shaft was installed using an excavator with a telescopic arm to reduce the risk of overhead electrocution as sheet piling and shoring boxes were ruled out. Two receive pit excavations were dug on top of the existing sewer line to allow the construction of the manholes to connect the existing sewer to the new alignment. The manholes were constructed in each shaft and lined with a HDPE protective liner.
35t excavator, 33t excavator with telescopic arm, AKS liner, dumper, skip truck, shoring boxes, caisson shaft segments
Pipes: DN700 Encasement Pipe & DN450 GRP pipe x 90m
Manholes: – 3 x 1800mm ID x 7m to 9m deep
Sep 19- Jan 20
Killard Scope $1.25m
Killard – Sewer and Manhole construction
By Project Management Personnel
Safety incidents – nil
Environmental incidents – nil
Mr. Norm Chow & Mr Matt Stephenson
This project demonstrates our expertise and ability to use technology and innovation to adapt to obstacles arising during a construction program.
With one manhole being constructed in the middle of the Portman St, extensive community consultation was carried out to minimise disruption to the public. This also included detailed traffic management and control.
Killard Infrastructure has been an approved Sydney Water contractor for Works for more than 20 years.