Profile of case study supply chains
| Case | Case I | Case II | ||
|---|---|---|---|---|
| Demolisher (D1) | Waste processor (WP1) | Demolisher (D2) | Waste processor (WP2) | |
| Year established | 1990 | 1991 | 1991 | 2018 |
| Annual turnover (approximately) | > A$250m | > A$250m | < A$250m | < A$250m |
| No. of employees | >950 | >700 | 40 | 28 |
| Typical services/ clients | Demolition and decommissioning (industrial and commercial); asbestos removal; internal demolition/refurbishment (typically major contractors and large asset owners) | Receives waste from multiple demolishers and construction actors and supplies recycled construction materials to civil engineering projects and residential/commercial construction | Mechanical building demolition; asbestos removal; partial/total demolition mainly for small–medium projects (typically local builders, small developers) | Receives DW mainly from small and medium-scale demolishers/builders; supplies recycled aggregates mainly to local contractors |
| Estimated demolition/ processing capacity | >100,000 t/year (range depending on project pipeline) | >100,000 t/year | <50,000 t/year | <50,000 t/year |
| Typical waste stream composition (Waste stream generated at source (demolisher)/Incoming waste stream received (waste processor)) | Concrete, bricks/ masonry, metals, timber and mixed residuals, depending on project type | Asphalt, concrete, bricks/masonry, timber and rubble, metals etc. | Concrete, masonry, metals, timber and mixed residuals | Mainly concrete, masonry and metals from small and medium-scale demolishers |
| Technology level | Advanced demolition machinery; on-site sorting equipment; and air monitoring systems for asbestos removal (including static and positional air sampling instruments) | Resource recovery facility equipped with waste processing and sorting technologies such as screens, magnets, and blowers to separate and process incoming waste streams | Basic demolition machinery with limited on-site sorting tools and segregation infrastructure | Basic crushing and screening operations with a higher reliance on manual sorting |
| Key stakeholders involved | Client/asset owner; principal contractor; regulator; transport/logistics; subcontractors | Demolishers/builders; regulator; downstream buyers; landfill for residuals | Local builders/clients; subcontractors; transport; regulator/local council | Local demolishers/builders; buyers (local contractors); landfill; regulator/local council |
| Main downstream outputs | – | A wide range of recycled products, including pavement and asphalt-type materials, aggregates, concrete and sand | – | Recycled concrete pavement materials and aggregates |
| Case | Case I | Case II | ||
|---|---|---|---|---|
| Demolisher (D1) | Waste processor (WP1) | Demolisher (D2) | Waste processor (WP2) | |
| Year established | 1990 | 1991 | 1991 | 2018 |
| Annual turnover (approximately) | > A$250m | > A$250m | < A$250m | < A$250m |
| No. of employees | >950 | >700 | 40 | 28 |
| Typical services/ clients | Demolition and decommissioning (industrial and commercial); asbestos removal; internal demolition/refurbishment (typically major contractors and large asset owners) | Receives waste from multiple demolishers and construction actors and supplies recycled construction materials to civil engineering projects and residential/commercial construction | Mechanical building demolition; asbestos removal; partial/total demolition mainly for small–medium projects (typically local builders, small developers) | Receives DW mainly from small and medium-scale demolishers/builders; supplies recycled aggregates mainly to local contractors |
| Estimated demolition/ processing capacity | >100,000 t/year (range depending on project pipeline) | >100,000 t/year | <50,000 t/year | <50,000 t/year |
| Concrete, bricks/ masonry, metals, timber and mixed residuals, depending on project type | Asphalt, concrete, bricks/masonry, timber and rubble, metals etc. | Concrete, masonry, metals, timber and mixed residuals | Mainly concrete, masonry and metals from small and medium-scale demolishers | |
| Technology level | Advanced demolition machinery; on-site sorting equipment; and air monitoring systems for asbestos removal (including static and positional air sampling instruments) | Resource recovery facility equipped with waste processing and sorting technologies such as screens, magnets, and blowers to separate and process incoming waste streams | Basic demolition machinery with limited on-site sorting tools and segregation infrastructure | Basic crushing and screening operations with a higher reliance on manual sorting |
| Key stakeholders involved | Client/asset owner; principal contractor; regulator; transport/logistics; subcontractors | Demolishers/builders; regulator; downstream buyers; landfill for residuals | Local builders/clients; subcontractors; transport; regulator/local council | Local demolishers/builders; buyers (local contractors); landfill; regulator/local council |
| Main downstream outputs | – | A wide range of recycled products, including pavement and asphalt-type materials, aggregates, concrete and sand | – | Recycled concrete pavement materials and aggregates |
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