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Concrete In Australia : June 2013
6 Concrete in Australia Vol 39 No 2 NEWS closely with the tunnel construction team to manage and report in real time as works progressed," he explained. "If needed, the construction process was modi ed to protect the integrity of assets and surrounding structures. A combination of automated and manual instrumentation is strategically located across the site to monitor water levels, ground movements and buildings. Over 100 prisms monitored movement inside the Joondalup Line tunnels on a real time basis." Anderson said: " e 50m of excavation directly above the Joondalup Line tunnels was the most challenging and took seven weeks to complete." Initial planning of the tunnel crossover had the gap between the Joondalup and Fremantle tunnels at just 700mm. To increase this gap, in an Australian rst, Solid Conductor Rail will be installed in the tunnel. is overhead traction wiring technique maximises height by installing the system on the tunnel roof and removing the need for masts and bracing arms. With completion of the major structure (tunnel oor, walls and roof), the works now progress to electrical and mechanical t-out. is includes installation of signals and other PTA services. Rail and overhead electrical power for trains will then be installed. Concrete Institute of Australia Office contact details Over 100 prisms monitored movement inside the Joondalup Line tunnels on a real time basis. National O ce Suite 401, Level 4, 53 Walker St, North Sydney, NSW 2060 PO Box 1227, North Sydney, NSW 2059 Phone: 02 9955 1744 Fax: 02 9966 1871 Email: firstname.lastname@example.org New South Wales Branch PO Box 1227, North Sydney, NSW 2059 Phone: 0423 731 837 Fax: 02 9966 1871 Email: email@example.com Queensland Branch Suite 2, Level 2, 485 Ipswich Rd, Annerley, Qld 4103 Phone: 07 3892 6668 Fax: 07 3892 5655 Email: firstname.lastname@example.org Victoria Branch 2nd Floor, 1 Hobson St, South Yarra, Victoria 3141 Phone: 03 9804 7834 Fax: 03 9827 6346 Email: email@example.com South Australia Branch PO Box 559, Marden, South Australia 5070 Phone: 08 8362 1922 Fax: 08 8362 1822 Email: firstname.lastname@example.org Western Australia Branch 45 Ventnor Avenue West Perth, Western Australia 6005 Phone: 08 9389 4447 Fax: 08 9389 4451 Email: email@example.com Tasmania Branch 37 Jetty Road Old Beach, Tasmania 7017 Phone: 0414 957 638 Fax: 03 6249 5782 Email: firstname.lastname@example.org