No published New Zealand figure for the cost of planning, procurement and sequencing failures

What it is. None: New Zealand sources measure waste by mass or volume and rank planning as a cost factor, and none prices wrong or surplus orders as a share of project cost.

Sample. Search terms: BRANZ construction waste New Zealand over-ordering materials percent; wrong materials ordered rework New Zealand; temporary works failure cost New Zealand; construction procurement supply chain delay cost percent of project New Zealand; Construction Sector Accord procurement. A frequency exists but is not a cost: AUT's scoping study puts construction and demolition waste at about 40% of New Zealand landfill, with estimates of 30% to 50% by source, and names over-ordering of wet concrete as a source of concrete waste (ER82). A BRANZ and EBOSS supplier survey of freight cost and delays turned up in search but was not opened.

What it is not. Recorded as none on purpose: waste by mass, landfill share and contractors' own waste percentages by material (1998 to 1999) are not a cost as a share of project value, and are not filed as one.

Where it came from

• Auckland University of Technology, for BRANZ (2023), Understanding waste generation in the New Zealand construction sector: Scoping study (BRANZ External Research Report ER82)
  Executive Summary (key issue 1); concrete waste section; supply-chain material · source record

Considered and set aside

• BRANZ (Roman Jaques): Contractors estimate material waste by material (for example plasterboard 5% to 15%) in 1998; 38 Wellington-area respondents, an estimate of quantity wasted, not cost, and dated.
• BRANZ (Roman Jaques): 84 Auckland respondents; non-standard sizing (53%) is the main cause of waste named by contractors; quantities and perceptions, no cost.
• Massey University (Asadi, Wilkinson, Rotimi): Materials and equipment and process causes of rework are among those the standard contract covers; clause coverage, no cost.
• Atapattu, Domingo & Sutrisna: Poor planning and scheduling is among the three most critical cost factors for New Zealand transport projects; a perception ranking with no magnitude (abstract only).
• NZ Institute of Economic Research (NZIER), for BRANZ: Table 2 prints BRANZ inspection results of 12% for materials and 12% for construction methods (builders' opinion 7% and 14%); shares of defects as printed, and the model prices defects as a whole.
• New Zealand Infrastructure Commission / Te Waihanga: Discusses procurement and delivery capability as drivers of unit cost; benchmarking of unit costs, no share attributable to wrong quantities, sequencing or temporary works.
• New Zealand Infrastructure Commission / Te Waihanga: The builder not anticipating the consenting system is named as a contributor; no figure.
• SCIRT Learning Legacy: Describes the Christchurch rebuild procurement model and its $2.2 billion total; no planning, over-order or sequencing cost.

rework/planning_procurement_none_nz · NZ · F ·the record ·link to this figure ·dispute this figure(or email support@demiton.io)