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Redevelopment of Fornebu International Airport Project description Background Fornebu airport was the main airport for Oslo, Norway from 1939 until the opening of the new airport ”Oslo Airport Gardermoen” on 8th October 1998, where after the Fornebu airport was closed. Plans were put in place to re-develop Fornebu airport into housing, office and recreation facilities. The total amount of asphalt left at Fornebu was estimated to be 425,000 tonnes. Waste Minimisation Activity Golder Associates performed an analysis of how asphalt waste at Fornebu should be used, taking economic, environmental and social aspects into consideration. The analysis related to site clearance contracts and co-ordination with proceeding construction works. Materials Targeted Approximately 425,000 tonnes of asphalt all of which was to be used on site within new road construction. Project Drivers for Waste Minimisation Cost benefits from reduced disposal costs, reduced primary materials costs and reduced transportation costs. Client requirement to implement projects sustainably. Regulatory requirements to meet recycling targets.

Project profile Location: Oslo, Norway Project Duration (in relation to the described activities): 1998 – 2000 Client: The Norwegian Directorate of Public Construction and Property (Statsbygg) Key Statistics: 425,000 tonnes of asphalt were re-used Company Profile Golder Associates (UK) Ltd Environmental and Engineering Consultants

Project Approach to Waste Minimisation and Sustainable Use of Resources

Design Phase Activities:

Enabling waste minimisation and the use of non-primary materials:
Since asphalt quantities and time frame for arisings was assessed at an early strategic stage, it was possible to integrate appropriate quality specifications into the tendering procedures, as well as delivery requirements for secondary materials to the ensuing construction works. By using the Demolition Wizard Tool, it was possible to assess financial and environmental cost/benefits of the various options.

Better handling of materials:
The Demolition Wizard Tool provides assessment of scenarios relating to various transportation, recycling, handling and segregation options for materials and resources during site clearance and redevelopment works. This assessment is based on the sustainability parameters of environmental and social impact, as well as financial implications.

Good practice in quantifying, costing and recording data on wastes and materials:
A waste arising and resource requirements gap analysis at an early stage in the planned redevelopment works allows for increased sustainability targets to be set and achieved, for example on recycling rates, energy consumption, and emissions.

Good practice in demolition and deconstruction activities:
From pre-demolition audits, recyclable and reusable materials are identified and can be included in demolition Tender Specifications.

Construction Phase Activities:

Using local approaches to encourage more sustainable practice:
By establishing on site asphalt recycling plant, a central location for sourcing materials during construction was provided.

Lessons Learned, Benefits and Barriers

With the help of the Demolition Wizard Tool, the Fornebu project management team was able to view the effect of various options upon the parameters considered important in their decision process and thereby identify their preferred resource management route during the works. The main barrier to utilizing the tool is timing! It needs to be used at a strategic stage, early in the planning.

Example Graphs from The Demolition Wizard Tool:

 

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