Melbourne Airport – Delta Infill GSE

AustStab Awards of Excellence 2014AustStab Awards of Excellence 2014

Negri Contractors VICInnovation or Excellence in Sustainability

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Project Background

Delta Infill GSE (Ground Support Equipment)

Construction of pavement airside at Melbourne Airport adjacent to international terminal

Project duration 6 months and value of 4.5M

Initiative Undertaken

Aurecon design for Delta Infill GSE called for removal of existing materials to be replaced with 200mm Cement Treated crushed rock

Within the contract was allowance for disposal of materials in subgrade

Negri Contractors tendered alternative design incorporating in-situ stabilization

Melbourne Airport Corporation recognised benefits of this proposal without risk to the design, the quality, it improved safety, environmental performance, and awarded the contract to Negri Contractors VIC

Key Points

Quality Control key to success. Review by Aurecon, results confirmed suitability of proposal with laboratory testing undertaken to determine mix design.

Safety of airport operations at all times critical. Stabilisation was suitable for night works when airside traffic is significantly reduced. Utilising existing materials reduced the number of cartage trucks entering airside. Environmental benefits including reduced cartage of raw materials to replace removed materials

Reduction in project schedule. Stabilisation completed in 6 shifts. Alternative 15 shifts plus off-site treatment for unsuitable subgrade. Initial 4 week project delay overcome.

Evidence of Success & Supporting Data Productivity – project duration reduced by 2 weeks Financial – eliminated need for 6% of the project

value as a provisional item Environmental – reuse of potentially contaminated

materials, reduction in raw material use, eliminated 250 truck movements

Safety – minimized airplane interaction, and was completed at night.

Delta Infill GSE – Negri Contractors