MCU16.0099.01, RAL19.0036 & OPW 19.0282.01 - Response to Information Request (final) 10.03.2020 · MCU16/0099.01

8      Provide further information which confirms the Gross Vehicle Mass (GVM) of the vehicles
       and machinery required to install and maintain the NBN tower.
To address the trafficability of the existing concrete crossing over the waterway, a memorandum has
been produced and attached to this response. The memorandum confirms the Gross Vehicle Mass
(GVM) of the following construction and maintenance vehicles that will be used for the construction
and future maintenance of the facility:
   Standard 4WD vehicle (GVM 1 tonne)
   Tipper truck with trailer (carrying excavator)

     Tipper Truck (GVM approximately 8 tonnes)
     Excavator (GVM approximately 8 tonnes)
   Concrete truck (32 tonnes)
   Truck for fencing contractor (GVM 4 tonnes)
   Semi-truck to deliver pole/tower (20 tonnes)
   Crane (GVM 100 tonne)
The above GVMs for the nominated construction and maintenance vehicles are approximate
measurements only. The actual GVM may vary at the time of construction.

9      Provide certification from an RPEQ demonstrating that the existing waterway crossing
       has the structural strength and integrity to carry the required load of vehicles and
       machinery required to install and maintain the proposed NBN tower when fully loaded.
I refer to the memorandum attached to this response (refer Appendix C). The memorandum was
produced and certified by an RPEQ to demonstrate if the strength and integrity of the existing
waterway crossing was able to carry the required load of construction vehicles without required
upgrades. The report methodology involved a two-part approach, being a visual inspection and a
geotechnical investigation.
The visual inspection concluded that the concreate surface was in good condition with limited cracks
and minimal crumbling. The clay surrounding the concrete appeared to be stiff in nature. To confirm
the visual observations, geotechnical investigation was undertaken and involved borehole testing and
in-situ testing. These tests confirmed that the concrete surface is surrounded by typically stiff clay that
increases in constancy with depth. Section 4.1 of the memorandum reinforces that the soil type
beneath the concrete will allow for the larger construction vehicles such as the crane to be sufficiently
supported while safely traversing the waterway. Further information clarifying the certification of the
waterway crossing is provided in Appendix C.




                      Project 247473 File MCU16.0099.01, RAL19.0036 & OPW 19.0282.01 - Response to Information Request (final).docx 2020-03-10 Revision 0 Page 6