Hurstville REF - Transport for NSW - NSW Government

Batteries (with the capability of providing a minimum of 12-15 hours’ back-up).MonopoleA 10 metre monopole will be erected in the rail corridor approximately 10 metres from thenorthern side of the track (Outdoor Location 2). Two Yagi antennas will be mounted 9 metresabove the ground with azimuths of 125° and 300°. The antennas will be installed to have a zerodegree tilt, but will be able to be remotely adjusted to different degrees of tilt, without the needto climb the monopole for such adjustments.3.1.3 Power SupplyThe proposed power supply is yet to be confirmed. It will be subjected to additional approval.3.1.4 Fibre OpticsOptical fibre will run in a new trench (approximately six metres long) from the Outdoor Location2 monopole to an existing pit, and then via existing cable routes to the new DBS/power cabinetat the end of Platform 3 and 4.Optical fibre will run through the existing cable route from the DTRS cabinet inside HurstvilleApparatus Room to the existing pit near the end of the Platform 3 and 4. Then approximatelyseven metres trenching will be required for the fibre to connect from the existing pit to theDBS/power cabinet and RRU at the end of the Platform 3 and 4.3.1.5 EarthingThe earthing installation will comprise six earth stakes at a pre-determined distance apart. Oncethese earth stakes have been installed, the system will be tested and modified if needed. Theinitial extent of the trenching for earthing grid will be around 20 metres. However, it can beextended up to five metres if the results show that the earthing arrangement is insufficient.3.2 Construction MethodologyConstruction of the DBS facility will require the use of approximately 60 square metres of land atOutdoor Location 2 and 20 square metres of land at Equipment Location 3 within the railcorridor. This area will allow for the monopole and DTRS cabinet to be installed.The monopole foundation will require an excavation approximately five metres deep with adiameter of one metre. This will result in approximately five cubic metres of excavated materialwhich may include rock.Installation of the fibre optic cables will require excavation of trenches approximately 1000millimetres maximum depth and 500 millimetres wide.The indicative construction methodology of the facility will include elements outlined below.Non-destructive excavation before construction to establish underground installations.Site establishment.Page 25 of 75