Waterbank, Perth

Waterbank is located in East Perth with a design to bring the city to the river and create a vibrant waterfront community. Lend Lease is the master developer of the Waterbank precinct managed by MRA. The mixed-use project includes the construction of over 900 residential dwellings, up to 20,000m² of commercial office space and retail space, along with significant public realm including green spaces, town square, boardwalk, jetty and beach.

Waterbank has been accepted for Green Building Council of Australia’s Green Star – Communities pilot rating tool and is aiming for a 5 Star Green Star ‘Australian Excellence’. eTool was engaged by ESD Consultants Cundall to conduct a Life Cycle Impact analysis (LCA) on the Infrastructure and Public Domain (IPD), to be used as an Innovation Challenge credit under the Green Star Communities rating.

Results Summary and Highlights

  • 26% reduction in global warming potential (greenhouse gas emissions)
  • Optimised ground improvement method with lower construction transportation impacts
  • Lighting run times and power usage was reduced – one of the main reasons for the GWP reduction
  • Use of LCA to assist the design process and make further improvements.
  • Client: Lend Lease
  • Location: East Perth, Western Australia
  • Date: July 2016

LCA Scope

The scope of assessment consists of the infrastructure and public amenities associated with the public domain for the overall development. The assessment includes all the upstream and downstream processes needed to establish and maintain the primary function of the IPD areas, from the acquisition of raw materials to their disposal or to the point where materials exit the system boundary either during or at the end of the IPD areas life cycle.

Infrastructure includes earthworks, power generation, cables, road works and stormwater systems while public amenities include street furniture, street lighting, barbecue facilities, parks/gardens, playground, riverside beach and associated paving.

The functional unit has been defined as one square meter (m2) of IPD area per service life year. The defined service life for IPD areas is set at 60 years. The LCA shows that the IPD areas’ construction transport and operational energy impacts dominate the environmental impacts followed by materials and maintenance.

The infrastructure service grids used for operational impacts assessment were SWIS Electricity grid, WA Distributed Gas grid, WA Water Supply and Treatment grids. The operational energy use of IPD areas is a significant contributor of life cycle environmental impacts. The performance of the IPD areas in terms of energy efficiency is hence critical. The base IPD areas energy use encompasses: lighting, lawn mowing and irrigation.

“The Life Cycle Assessment of the Waterbank Infrastructure project gave eTool the opportunity to extend our database into new areas. The materials, labour and life cycle impacts associated with the infrastructure is substantial, and yet it is excluded from the scope of building LCA’s. Working with Lend Lease and the design team, we were able to create new templates to model the impacts of infrastructure projects. This allows eTool to provide life cycle design advice relating to roads, walkways, public space lighting, drainage, civil works.”, says Tom Beckerling, eTool Team Leader. 

This assessment was conducted by Tom Beckerling and certified by Henrique & Richard from eTool. Please contact eTool for more information on LCA applied to infrastructure projects.