Project Overview
We were involved in the delivery of the civil components. In the early stages, 22 disabled spaces were relocated to the smaller existing John Gorton car park before the building construction could begin. These parking spaces retrofitted and augmented the existing car park to a DDA and AS2890-compliant area. Following the construction of the disabled spaces, an internal linking loop road was constructed. The loop road and associated landscaping were completed in October 2023.
Upgrade of the Kings Avenue–Blackall Street intersection also formed part of the project scope. This involved the removal of the existing seagull intersection and upgrading the intersection to a four-way signalised intersection with a new road servicing the new car park structure. We successfully managed all the public notification and coordination involved in its construction. This included the successful relocation of an existing bus shelter and stop.
We were also responsible for the installation of the site’s new stormwater network. Stormwater had to be re-routed around the building, and the building was mid-catchment in a brownfield site. We had to not only cater for the site’s stormwater runoff but also the runoff from the upstream catchments. The stormwater network drained to Lake Burley Griffin. We managed the stormwater flows. This involved the installation of diversion drains and ensuring that the greater catchment functioned satisfactorily while the stormwater was being installed. The stormwater network that was installed ranged in size from 750mm diameter pipes to 1500mm diameter pipes.
Many of these pipes required the installation of large custom cast in situ pits as the depth to invert for many of these pipes ranged from 3.0 – 4.2m below the finished surface level. We used a system of benching, shoring boxes and battering to install these lines. Many of these lines were in heavily congested service corridors or amongst trees of historical significance. We successfully managed to install all these large bore pipes with minimal disruption to the area or flora.
