Origin Energy
Combabula, Queensland
Access Road
Project Scope
Civil engineering

Value Engineering

RMA was commissioned to review and amend the engineering design prepared by another consultant of an access road, pavement and drainage design for the APLNG Combabula field.

The client was concerned that the existing design did not provide enough coverage over existing infrastructure including gas and water pipelines, high voltage electrical cables and fibre optic cables.

The horizontal alignment for the road couldn’t be changed, so RMA amended the vertical alignment to provide appropriate coverage, improved the cut to fill balance and improved the pavement design.

Advantages of RMA’s Input

  • RMA’s engineers design revisions substantially reduced the client’s construction costs.
  • The existing high value existing infrastructure was adequately protected, minimising the risk of delays and financial penalties for the client during and after construction.
  • The project now complied with the requirements of both the Department of Transport and Main Roads and the client’s internal corporate standards.


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