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Case Studies
Case Study: Commercial Deconstruction
Partial Deconstruction of Bridge Climb Building, Auckland (2004)
Summary
Ward Demolition were contracted to partially deconstruct/demolish a 1970's 200m2, storey-and-a-half commercial building, in downtown Auckland. The building consisted of exposed RHS "V" steel arches, concrete block walls, and a concrete slab floor. The objective was to salvage the higher value items - over a three week demolition period. The items that were considered to be worth salvaging were limited to:
STRUCTURAL: 250 x 150 mm RHS V steel arches, steel cross braces, 190 x 45 mm timber rafters and concrete block walls
CLADDING: corrugated steel roofing
OTHER: large electric lamps
Some items were 'down cycled' - that is recycled for lower value use. For example, the concrete block walls were taken to the Ward Demolition concrete crusher, to be used later for fill. The remaining items were landfilled.
Good Practice Examples
Examples of good deconstruction practice (with instructive pictures) include:
Business Profile
WARD demolition is one of the largest demolition firms in the country. The company has about 60 employees, a large used goods sale yard and concrete crushing plant.
Type of project
This project had a limited number of salvageable items, due to the lower quality or resale-ability of component materials, including: reinforced glass panels, plasterboard and lightweight timber framing for the partitioning walls, and MDF.
Reasons for the Project
Reduced dumping fees, on-sale of higher quality of materials.
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